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powerpc updates for 4.9

Browse source 
Highlights:
  - Major rework of Book3S 64-bit exception vectors (Nicholas Piggin)
    - Use gas sections for arranging exception vectors et. al.
  - Large set of TM cleanups and selftests (Cyril Bur)
  - Enable transactional memory (TM) lazily for userspace (Cyril Bur)
  - Support for XZ compression in the zImage wrapper (Oliver O'Halloran)
  - Add support for bpf constant blinding (Naveen N. Rao)
  - Beginnings of upstream support for PA Semi Nemo motherboards (Darren Stevens)
 
 Fixes:
  - Ensure .mem(init|exit).text are within _stext/_etext (Michael Ellerman)
  - xmon: Don't use ld on 32-bit (Michael Ellerman)
  - vdso64: Use double word compare on pointers (Anton Blanchard)
  - powerpc/nvram: Fix an incorrect partition merge (Pan Xinhui)
  - powerpc: Fix usage of _PAGE_RO in hugepage (Christophe Leroy)
  - powerpc/mm: Update FORCE_MAX_ZONEORDER range to allow hugetlb w/4K (Aneesh Kumar K.V)
  - Fix memory leak in queue_hotplug_event() error path (Andrew Donnellan)
  - Replay hypervisor maintenance interrupt first (Nicholas Piggin)
 
 Cleanups & features:
  - Sparse fixes/cleanups (Daniel Axtens)
  - Preserve CFAR value on SLB miss caused by access to bogus address (Paul Mackerras)
  - Radix MMU fixups for POWER9 (Aneesh Kumar K.V)
  - Support for setting used_(vsr|vr|spe) in sigreturn path (for CRIU) (Simon Guo)
  - Optimise syscall entry for virtual, relocatable case (Nicholas Piggin)
  - Optimise MSR handling in exception handling (Nicholas Piggin)
  - Support for kexec with Radix MMU (Benjamin Herrenschmidt)
  - powernv EEH fixes (Russell Currey)
  - Suprise PCI hotplug support for powernv (Gavin Shan)
  - Endian/sparse fixes for powernv PCI (Gavin Shan)
  - Defconfig updates (Anton Blanchard)
  - Various performance optimisations (Anton Blanchard)
    - Align hot loops of memset() and backwards_memcpy()
    - During context switch, check before setting mm_cpumask
    - Remove static branch prediction in atomic{, 64}_add_unless
    - Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little endian
    - Set default CPU type to POWER8 for little endian builds
 
  - KVM: PPC: Book3S HV: Migrate pinned pages out of CMA (Balbir Singh)
  - cxl: Flush PSL cache before resetting the adapter (Frederic Barrat)
  - cxl: replace loop with for_each_child_of_node(), remove unneeded of_node_put() (Andrew Donnellan)
  - Fix HV facility unavailable to use correct handler (Nicholas Piggin)
  - Remove unnecessary syscall trampoline (Nicholas Piggin)
  - fadump: Fix build break when CONFIG_PROC_VMCORE=n (Michael Ellerman)
  - Quieten EEH message when no adapters are found (Anton Blanchard)
  - powernv: Add PHB register dump debugfs handle (Russell Currey)
  - Use kprobe blacklist for exception handlers & asm functions (Nicholas Piggin)
  - Document the syscall ABI (Nicholas Piggin)
  - MAINTAINERS: Update cxl maintainers (Michael Neuling)
  - powerpc: Remove all usages of NO_IRQ (Michael Ellerman)
 
 Minor cleanups:
  - Andrew Donnellan, Christophe Leroy, Colin Ian King, Cyril Bur, Frederic Barrat,
    Pan Xinhui, PrasannaKumar Muralidharan, Rui Teng, Simon Guo.
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Merge tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights:
   - Major rework of Book3S 64-bit exception vectors (Nicholas Piggin)
   - Use gas sections for arranging exception vectors et. al.
   - Large set of TM cleanups and selftests (Cyril Bur)
   - Enable transactional memory (TM) lazily for userspace (Cyril Bur)
   - Support for XZ compression in the zImage wrapper (Oliver
     O'Halloran)
   - Add support for bpf constant blinding (Naveen N. Rao)
   - Beginnings of upstream support for PA Semi Nemo motherboards
     (Darren Stevens)

  Fixes:
   - Ensure .mem(init|exit).text are within _stext/_etext (Michael
     Ellerman)
   - xmon: Don't use ld on 32-bit (Michael Ellerman)
   - vdso64: Use double word compare on pointers (Anton Blanchard)
   - powerpc/nvram: Fix an incorrect partition merge (Pan Xinhui)
   - powerpc: Fix usage of _PAGE_RO in hugepage (Christophe Leroy)
   - powerpc/mm: Update FORCE_MAX_ZONEORDER range to allow hugetlb w/4K
     (Aneesh Kumar K.V)
   - Fix memory leak in queue_hotplug_event() error path (Andrew
     Donnellan)
   - Replay hypervisor maintenance interrupt first (Nicholas Piggin)

  Various performance optimisations (Anton Blanchard):
   - Align hot loops of memset() and backwards_memcpy()
   - During context switch, check before setting mm_cpumask
   - Remove static branch prediction in atomic{, 64}_add_unless
   - Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little
     endian
   - Set default CPU type to POWER8 for little endian builds

  Cleanups & features:
   - Sparse fixes/cleanups (Daniel Axtens)
   - Preserve CFAR value on SLB miss caused by access to bogus address
     (Paul Mackerras)
   - Radix MMU fixups for POWER9 (Aneesh Kumar K.V)
   - Support for setting used_(vsr|vr|spe) in sigreturn path (for CRIU)
     (Simon Guo)
   - Optimise syscall entry for virtual, relocatable case (Nicholas
     Piggin)
   - Optimise MSR handling in exception handling (Nicholas Piggin)
   - Support for kexec with Radix MMU (Benjamin Herrenschmidt)
   - powernv EEH fixes (Russell Currey)
   - Suprise PCI hotplug support for powernv (Gavin Shan)
   - Endian/sparse fixes for powernv PCI (Gavin Shan)
   - Defconfig updates (Anton Blanchard)
   - KVM: PPC: Book3S HV: Migrate pinned pages out of CMA (Balbir Singh)
   - cxl: Flush PSL cache before resetting the adapter (Frederic Barrat)
   - cxl: replace loop with for_each_child_of_node(), remove unneeded
     of_node_put() (Andrew Donnellan)
   - Fix HV facility unavailable to use correct handler (Nicholas
     Piggin)
   - Remove unnecessary syscall trampoline (Nicholas Piggin)
   - fadump: Fix build break when CONFIG_PROC_VMCORE=n (Michael
     Ellerman)
   - Quieten EEH message when no adapters are found (Anton Blanchard)
   - powernv: Add PHB register dump debugfs handle (Russell Currey)
   - Use kprobe blacklist for exception handlers & asm functions
     (Nicholas Piggin)
   - Document the syscall ABI (Nicholas Piggin)
   - MAINTAINERS: Update cxl maintainers (Michael Neuling)
   - powerpc: Remove all usages of NO_IRQ (Michael Ellerman)

  Minor cleanups:
   - Andrew Donnellan, Christophe Leroy, Colin Ian King, Cyril Bur,
     Frederic Barrat, Pan Xinhui, PrasannaKumar Muralidharan, Rui Teng,
     Simon Guo"

* tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits)
  powerpc/bpf: Add support for bpf constant blinding
  powerpc/bpf: Implement support for tail calls
  powerpc/bpf: Introduce accessors for using the tmp local stack space
  powerpc/fadump: Fix build break when CONFIG_PROC_VMCORE=n
  powerpc: tm: Enable transactional memory (TM) lazily for userspace
  powerpc/tm: Add TM Unavailable Exception
  powerpc: Remove do_load_up_transact_{fpu,altivec}
  powerpc: tm: Rename transct_(*) to ck(\1)_state
  powerpc: tm: Always use fp_state and vr_state to store live registers
  selftests/powerpc: Add checks for transactional VSXs in signal contexts
  selftests/powerpc: Add checks for transactional VMXs in signal contexts
  selftests/powerpc: Add checks for transactional FPUs in signal contexts
  selftests/powerpc: Add checks for transactional GPRs in signal contexts
  selftests/powerpc: Check that signals always get delivered
  selftests/powerpc: Add TM tcheck helpers in C
  selftests/powerpc: Allow tests to extend their kill timeout
  selftests/powerpc: Introduce GPR asm helper header file
  selftests/powerpc: Move VMX stack frame macros to header file
  selftests/powerpc: Rework FPU stack placement macros and move to header file
  selftests/powerpc: Check for VSX preservation across userspace preemption
  ...
This commit is contained in:
Linus Torvalds 2016-10-07 20:19:31 -07:00
commit 07021b4359
227 changed files with 5471 additions and 2931 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

105
Documentation/powerpc/syscall64-abi.txt Normal file
View file

@ -0,0 +1,105 @@
===============================================
Power Architecture 64-bit Linux system call ABI
===============================================
syscall
=======
syscall calling sequence[*] matches the Power Architecture 64-bit ELF ABI
specification C function calling sequence, including register preservation
rules, with the following differences.
[*] Some syscalls (typically low-level management functions) may have
different calling sequences (e.g., rt_sigreturn).
Parameters and return value
---------------------------
The system call number is specified in r0.
There is a maximum of 6 integer parameters to a syscall, passed in r3-r8.
Both a return value and a return error code are returned. cr0.SO is the return
error code, and r3 is the return value or error code. When cr0.SO is clear,
the syscall succeeded and r3 is the return value. When cr0.SO is set, the
syscall failed and r3 is the error code that generally corresponds to errno.
Stack
-----
System calls do not modify the caller's stack frame. For example, the caller's
stack frame LR and CR save fields are not used.
Register preservation rules
---------------------------
Register preservation rules match the ELF ABI calling sequence with the
following differences:
r0: Volatile. (System call number.)
r3: Volatile. (Parameter 1, and return value.)
r4-r8: Volatile. (Parameters 2-6.)
cr0: Volatile (cr0.SO is the return error condition)
cr1, cr5-7: Nonvolatile.
lr: Nonvolatile.
All floating point and vector data registers as well as control and status
registers are nonvolatile.
Invocation
----------
The syscall is performed with the sc instruction, and returns with execution
continuing at the instruction following the sc instruction.
Transactional Memory
--------------------
Syscall behavior can change if the processor is in transactional or suspended
transaction state, and the syscall can affect the behavior of the transaction.
If the processor is in suspended state when a syscall is made, the syscall
will be performed as normal, and will return as normal. The syscall will be
performed in suspended state, so its side effects will be persistent according
to the usual transactional memory semantics. A syscall may or may not result
in the transaction being doomed by hardware.
If the processor is in transactional state when a syscall is made, then the
behavior depends on the presence of PPC_FEATURE2_HTM_NOSC in the AT_HWCAP2 ELF
auxiliary vector.
- If present, which is the case for newer kernels, then the syscall will not
be performed and the transaction will be doomed by the kernel with the
failure code TM_CAUSE_SYSCALL | TM_CAUSE_PERSISTENT in the TEXASR SPR.
- If not present (older kernels), then the kernel will suspend the
transactional state and the syscall will proceed as in the case of a
suspended state syscall, and will resume the transactional state before
returning to the caller. This case is not well defined or supported, so this
behavior should not be relied upon.
vsyscall
========
vsyscall calling sequence matches the syscall calling sequence, with the
following differences. Some vsyscalls may have different calling sequences.
Parameters and return value
---------------------------
r0 is not used as an input. The vsyscall is selected by its address.
Stack
-----
The vsyscall may or may not use the caller's stack frame save areas.
Register preservation rules
---------------------------
r0: Volatile.
cr1, cr5-7: Volatile.
lr: Volatile.
Invocation
----------
The vsyscall is performed with a branch-with-link instruction to the vsyscall
function address.
Transactional Memory
--------------------
vsyscalls will run in the same transactional state as the caller. A vsyscall
may or may not result in the transaction being doomed by hardware.

4
MAINTAINERS
View file

@ -3523,14 +3523,14 @@ F: drivers/net/ethernet/chelsio/cxgb4vf/
CXL (IBM Coherent Accelerator Processor Interface CAPI) DRIVER
M: Ian Munsie <imunsie@au1.ibm.com>
M: Michael Neuling <mikey@neuling.org>
M: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
L: linuxppc-dev@lists.ozlabs.org
S: Supported
F: arch/powerpc/platforms/powernv/pci-cxl.c
F: drivers/misc/cxl/
F: include/misc/cxl*
F: include/uapi/misc/cxl.h
F: Documentation/powerpc/cxl.txt
F: Documentation/powerpc/cxl.txt
F: Documentation/ABI/testing/sysfs-class-cxl
CXLFLASH (IBM Coherent Accelerator Processor Interface CAPI Flash) SCSI DRIVER

10
arch/powerpc/Kconfig
View file

@ -12,11 +12,6 @@ config 64BIT
bool
default y if PPC64
config WORD_SIZE
int
default 64 if PPC64
default 32 if !PPC64
config ARCH_PHYS_ADDR_T_64BIT
def_bool PPC64 || PHYS_64BIT
@ -101,7 +96,7 @@ config PPC
select VIRT_TO_BUS if !PPC64
select HAVE_IDE
select HAVE_IOREMAP_PROT
select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
select HAVE_KPROBES
select HAVE_ARCH_KGDB
select HAVE_KRETPROBES
@ -167,6 +162,7 @@ config PPC
select GENERIC_CPU_AUTOPROBE
select HAVE_VIRT_CPU_ACCOUNTING
select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_KERNEL_GZIP
config GENERIC_CSUM
def_bool CPU_LITTLE_ENDIAN
@ -637,7 +633,7 @@ config FORCE_MAX_ZONEORDER
int "Maximum zone order"
range 8 9 if PPC64 && PPC_64K_PAGES
default "9" if PPC64 && PPC_64K_PAGES
range 9 13 if PPC64 && !PPC_64K_PAGES
range 13 13 if PPC64 && !PPC_64K_PAGES
default "13" if PPC64 && !PPC_64K_PAGES
range 9 64 if PPC32 && PPC_16K_PAGES
default "9" if PPC32 && PPC_16K_PAGES

43
arch/powerpc/Makefile
View file

@ -43,31 +43,24 @@ NM := $(NM) --synthetic
endif
endif
ifeq ($(CONFIG_PPC64),y)
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
OLDARCH := ppc64le
# BITS is used as extension for files which are available in a 32 bit
# and a 64 bit version to simplify shared Makefiles.
# e.g.: obj-y += foo_$(BITS).o
export BITS
ifdef CONFIG_PPC64
BITS := 64
else
OLDARCH := ppc64
endif
else
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
OLDARCH := ppcle
else
OLDARCH := ppc
endif
BITS := 32
endif
# It seems there are times we use this Makefile without
# including the config file, but this replicates the old behaviour
ifeq ($(CONFIG_WORD_SIZE),)
CONFIG_WORD_SIZE := 32
endif
UTS_MACHINE := $(OLDARCH)
machine-y = ppc
machine-$(CONFIG_PPC64) += 64
machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le
UTS_MACHINE := $(subst $(space),,$(machine-y))
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
override LD += -EL
override CROSS32AS += -mlittle-endian
LDEMULATION := lppc
GNUTARGET := powerpcle
MULTIPLEWORD := -mno-multiple
@ -89,10 +82,10 @@ aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
ifeq ($(HAS_BIARCH),y)
override AS += -a$(CONFIG_WORD_SIZE)
override LD += -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION)
override CC += -m$(CONFIG_WORD_SIZE)
override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-$(GNUTARGET) $(AR)
override AS += -a$(BITS)
override LD += -m elf$(BITS)$(LDEMULATION)
override CC += -m$(BITS)
override AR := GNUTARGET=elf$(BITS)-$(GNUTARGET) $(AR)
endif
LDFLAGS_vmlinux-y := -Bstatic
@ -179,7 +172,7 @@ KBUILD_CFLAGS += $(call cc-option,-msoft-float)
KBUILD_CFLAGS += -pipe -Iarch/$(ARCH) $(CFLAGS-y)
CPP = $(CC) -E $(KBUILD_CFLAGS)
CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
CHECKFLAGS += -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
ifdef CONFIG_CPU_BIG_ENDIAN
CHECKFLAGS += -D__BIG_ENDIAN__
else
@ -234,7 +227,7 @@ KBUILD_CFLAGS += $(cpu-as-y)
KBUILD_AFLAGS += $(aflags-y)
KBUILD_CFLAGS += $(cflags-y)
head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
head-y := arch/powerpc/kernel/head_$(BITS).o
head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o

86
arch/powerpc/boot/Makefile
View file

@ -19,10 +19,15 @@
all: $(obj)/zImage
compress-$(CONFIG_KERNEL_GZIP) := CONFIG_KERNEL_GZIP
compress-$(CONFIG_KERNEL_XZ) := CONFIG_KERNEL_XZ
BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -Os -msoft-float -pipe \
-fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
-isystem $(shell $(CROSS32CC) -print-file-name=include)
-isystem $(shell $(CROSS32CC) -print-file-name=include) \
-D$(compress-y)
ifdef CONFIG_PPC64_BOOT_WRAPPER
BOOTCFLAGS += -m64
endif
@ -59,13 +64,30 @@ $(obj)/treeboot-currituck.o: BOOTCFLAGS += -mcpu=405
$(obj)/treeboot-akebono.o: BOOTCFLAGS += -mcpu=405
$(obj)/virtex405-head.o: BOOTAFLAGS += -mcpu=405
# The pre-boot decompressors pull in a lot of kernel headers and other source
# files. This creates a bit of a dependency headache since we need to copy
# these files into the build dir, fix up any includes and ensure that dependent
# files are copied in the right order.
zlib := inffast.c inflate.c inftrees.c
zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
zliblinuxheader := zlib.h zconf.h zutil.h
# these need to be seperate variables because they are copied out of different
# directories in the kernel tree. Sure you COULd merge them, but it's a
# cure-is-worse-than-disease situation.
zlib-decomp-$(CONFIG_KERNEL_GZIP) := decompress_inflate.c
zlib-$(CONFIG_KERNEL_GZIP) := inffast.c inflate.c inftrees.c
zlibheader-$(CONFIG_KERNEL_GZIP) := inffast.h inffixed.h inflate.h inftrees.h infutil.h
zliblinuxheader-$(CONFIG_KERNEL_GZIP) := zlib.h zconf.h zutil.h
$(addprefix $(obj)/,$(zlib) cuboot-c2k.o gunzip_util.o main.o): \
$(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
$(addprefix $(obj)/, decompress.o): \
$(addprefix $(obj)/,$(zlib-decomp-y))
$(addprefix $(obj)/, $(zlib-decomp-y)): \
$(addprefix $(obj)/,$(zliblinuxheader-y)) \
$(addprefix $(obj)/,$(zlibheader-y)) \
$(addprefix $(obj)/,$(zlib-y))
$(addprefix $(obj)/,$(zlib-y)): \
$(addprefix $(obj)/,$(zliblinuxheader-y)) \
$(addprefix $(obj)/,$(zlibheader-y))
libfdt := fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c
libfdtheader := fdt.h libfdt.h libfdt_internal.h
@ -73,10 +95,10 @@ libfdtheader := fdt.h libfdt.h libfdt_internal.h
$(addprefix $(obj)/,$(libfdt) libfdt-wrapper.o simpleboot.o epapr.o opal.o): \
$(addprefix $(obj)/,$(libfdtheader))
src-wlib-y := string.S crt0.S crtsavres.S stdio.c main.c \
src-wlib-y := string.S crt0.S crtsavres.S stdio.c decompress.c main.c \
$(libfdt) libfdt-wrapper.c \
ns16550.c serial.c simple_alloc.c div64.S util.S \
gunzip_util.c elf_util.c $(zlib) devtree.c stdlib.c \
elf_util.c $(zlib-y) devtree.c stdlib.c \
oflib.c ofconsole.c cuboot.c mpsc.c cpm-serial.c \
uartlite.c mpc52xx-psc.c opal.c opal-calls.S
src-wlib-$(CONFIG_40x) += 4xx.c planetcore.c
@ -125,23 +147,20 @@ obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
obj-plat: $(libfdt)
quiet_cmd_copy_zlib = COPY $@
cmd_copy_zlib = sed "s@__used@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
quiet_cmd_copy_kern_src = COPY $@
cmd_copy_kern_src = sed -f $(srctree)/arch/powerpc/boot/fixup-headers.sed $< > $@
quiet_cmd_copy_zlibheader = COPY $@
cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
# stddef.h for NULL
quiet_cmd_copy_zliblinuxheader = COPY $@
cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
$(addprefix $(obj)/,$(zlib-y)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
$(call cmd,copy_kern_src)
$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
$(call cmd,copy_zlib)
$(addprefix $(obj)/,$(zlibheader-y)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
$(call cmd,copy_kern_src)
$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
$(call cmd,copy_zlibheader)
$(addprefix $(obj)/,$(zliblinuxheader-y)): $(obj)/%: $(srctree)/include/linux/%
$(call cmd,copy_kern_src)
$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
$(call cmd,copy_zliblinuxheader)
$(addprefix $(obj)/,$(zlib-decomp-y)): $(obj)/%: $(srctree)/lib/%
$(call cmd,copy_kern_src)
quiet_cmd_copy_libfdt = COPY $@
cmd_copy_libfdt = cp $< $@
@ -150,17 +169,17 @@ $(addprefix $(obj)/,$(libfdt) $(libfdtheader)): $(obj)/%: $(srctree)/scripts/dtc
$(call cmd,copy_libfdt)
$(obj)/empty.c:
@touch $@
$(Q)touch $@
$(obj)/zImage.lds: $(obj)/%: $(srctree)/$(src)/%.S
$(CROSS32CC) $(cpp_flags) -E -Wp,-MD,$(depfile) -P -Upowerpc \
-D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $<
$(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds : $(obj)/%: $(srctree)/$(src)/%.S
@cp $< $@
$(Q)cp $< $@
clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
$(libfdt) $(libfdtheader) \
clean-files := $(zlib-) $(zlibheader-) $(zliblinuxheader-) \
$(zlib-decomp-) $(libfdt) $(libfdtheader) \
empty.c zImage.coff.lds zImage.ps3.lds zImage.lds
quiet_cmd_bootcc = BOOTCC $@
@ -207,10 +226,14 @@ CROSSWRAP := -C "$(CROSS_COMPILE)"
endif
endif
compressor-$(CONFIG_KERNEL_GZIP) := gz
compressor-$(CONFIG_KERNEL_XZ) := xz
# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
quiet_cmd_wrap = WRAP $@
cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
$(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
cmd_wrap =$(CONFIG_SHELL) $(wrapper) -Z $(compressor-y) -c -o $@ -p $2 \
$(CROSSWRAP) $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) \
vmlinux
image-$(CONFIG_PPC_PSERIES) += zImage.pseries
image-$(CONFIG_PPC_POWERNV) += zImage.pseries
@ -391,9 +414,9 @@ image-y := vmlinux.strip
endif
$(obj)/zImage: $(addprefix $(obj)/, $(image-y))
@rm -f $@; ln $< $@
$(Q)rm -f $@; ln $< $@
$(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y))
@rm -f $@; ln $< $@
$(Q)rm -f $@; ln $< $@
# Only install the vmlinux
install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
@ -410,8 +433,9 @@ clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \
zImage.maple simpleImage.* otheros.bld *.dtb
# clean up files cached by wrapper
clean-kernel := vmlinux.strip vmlinux.bin
clean-kernel += $(addsuffix .gz,$(clean-kernel))
clean-kernel-base := vmlinux.strip vmlinux.bin
clean-kernel := $(addsuffix .gz,$(clean-kernel-base))
clean-kernel += $(addsuffix .xz,$(clean-kernel-base))
# If not absolute clean-files are relative to $(obj).
clean-files += $(addprefix $(objtree)/, $(clean-kernel))

1
arch/powerpc/boot/cuboot-c2k.c
View file

@ -18,7 +18,6 @@
#include "io.h"
#include "ops.h"
#include "elf.h"
#include "gunzip_util.h"
#include "mv64x60.h"
#include "cuboot.h"
#include "ppcboot.h"

148
arch/powerpc/boot/decompress.c Normal file
View file

@ -0,0 +1,148 @@
/*
* Wrapper around the kernel's pre-boot decompression library.
*
* Copyright (C) IBM Corporation 2016.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include "elf.h"
#include "page.h"
#include "string.h"
#include "stdio.h"
#include "ops.h"
#include "reg.h"
#include "types.h"
/*
* The decompressor_*.c files play #ifdef games so they can be used in both
* pre-boot and regular kernel code. We need these definitions to make the
* includes work.
*/
#define STATIC static
#define INIT
#define __always_inline inline
/*
* The build process will copy the required zlib source files and headers
* out of lib/ and "fix" the includes so they do not pull in other kernel
* headers.
*/
#ifdef CONFIG_KERNEL_GZIP
# include "decompress_inflate.c"
#endif
#ifdef CONFIG_KERNEL_XZ
# include "xz_config.h"
# include "../../../lib/decompress_unxz.c"
#endif
/* globals for tracking the state of the decompression */
static unsigned long decompressed_bytes;
static unsigned long limit;
static unsigned long skip;
static char *output_buffer;
/*
* flush() is called by __decompress() when the decompressor's scratch buffer is
* full.
*/
static long flush(void *v, unsigned long buffer_size)
{
unsigned long end = decompressed_bytes + buffer_size;
unsigned long size = buffer_size;
unsigned long offset = 0;
char *in = v;
char *out;
/*
* if we hit our decompression limit, we need to fake an error to abort
* the in-progress decompression.
*/
if (decompressed_bytes >= limit)
return -1;
/* skip this entire block */
if (end <= skip) {
decompressed_bytes += buffer_size;
return buffer_size;
}
/* skip some data at the start, but keep the rest of the block */
if (decompressed_bytes < skip && end > skip) {
offset = skip - decompressed_bytes;
in += offset;
size -= offset;
decompressed_bytes += offset;
}
out = &output_buffer[decompressed_bytes - skip];
size = min(decompressed_bytes + size, limit) - decompressed_bytes;
memcpy(out, in, size);
decompressed_bytes += size;
return buffer_size;
}
static void print_err(char *s)
{
/* suppress the "error" when we terminate the decompressor */
if (decompressed_bytes >= limit)
return;
printf("Decompression error: '%s'\n\r", s);
}
/**
* partial_decompress - decompresses part or all of a compressed buffer
* @inbuf: input buffer
* @input_size: length of the input buffer
* @outbuf: input buffer
* @output_size: length of the input buffer
* @skip number of output bytes to ignore
*
* This function takes compressed data from inbuf, decompresses and write it to
* outbuf. Once output_size bytes are written to the output buffer, or the
* stream is exhausted the function will return the number of bytes that were
* decompressed. Otherwise it will return whatever error code the decompressor
* reported (NB: This is specific to each decompressor type).
*
* The skip functionality is mainly there so the program and discover
* the size of the compressed image so that it can ask firmware (if present)
* for an appropriately sized buffer.
*/
long partial_decompress(void *inbuf, unsigned long input_size,
void *outbuf, unsigned long output_size, unsigned long _skip)
{
int ret;
/*
* The skipped bytes needs to be included in the size of data we want
* to decompress.
*/
output_size += _skip;
decompressed_bytes = 0;
output_buffer = outbuf;
limit = output_size;
skip = _skip;
ret = __decompress(inbuf, input_size, NULL, flush, outbuf,
output_size, NULL, print_err);
/*
* If decompression was aborted due to an actual error rather than
* a fake error that we used to abort, then we should report it.
*/
if (decompressed_bytes < limit)
return ret;
return decompressed_bytes - skip;
}

12
arch/powerpc/boot/fixup-headers.sed Normal file
View file

@ -0,0 +1,12 @@
# Copyright 2016 IBM Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
s@#include <linux/decompress/mm\.h>@@;
s@\"zlib_inflate/\([^\"]*\).*@"\1"@;
s@<linux/kernel.h>@<stddef.h>@;
s@__used@@;
s@<linux/\([^>]*\).*@"\1"@;

204
arch/powerpc/boot/gunzip_util.c
View file

@ -1,204 +0,0 @@
/*
* Copyright 2007 David Gibson, IBM Corporation.
* Based on earlier work, Copyright (C) Paul Mackerras 1997.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <stddef.h>
#include "string.h"
#include "stdio.h"
#include "ops.h"
#include "gunzip_util.h"
#define HEAD_CRC 2
#define EXTRA_FIELD 4
#define ORIG_NAME 8
#define COMMENT 0x10
#define RESERVED 0xe0
/**
* gunzip_start - prepare to decompress gzip data
* @state: decompressor state structure to be initialized
* @src: buffer containing gzip compressed or uncompressed data
* @srclen: size in bytes of the buffer at src
*
* If the buffer at @src contains a gzip header, this function
* initializes zlib to decompress the data, storing the decompression
* state in @state. The other functions in this file can then be used
* to decompress data from the gzipped stream.
*
* If the buffer at @src does not contain a gzip header, it is assumed
* to contain uncompressed data. The buffer information is recorded
* in @state and the other functions in this file will simply copy
* data from the uncompressed data stream at @src.
*
* Any errors, such as bad compressed data, cause an error to be
* printed an the platform's exit() function to be called.
*/
void gunzip_start(struct gunzip_state *state, void *src, int srclen)
{
char *hdr = src;
int hdrlen = 0;
memset(state, 0, sizeof(*state));
/* Check for gzip magic number */
if ((hdr[0] == 0x1f) && (hdr[1] == 0x8b)) {
/* gzip data, initialize zlib parameters */
int r, flags;
state->s.workspace = state->scratch;
if (zlib_inflate_workspacesize() > sizeof(state->scratch))
fatal("insufficient scratch space for gunzip\n\r");
/* skip header */
hdrlen = 10;
flags = hdr[3];
if (hdr[2] != Z_DEFLATED || (flags & RESERVED) != 0)
fatal("bad gzipped data\n\r");
if ((flags & EXTRA_FIELD) != 0)
hdrlen = 12 + hdr[10] + (hdr[11] << 8);
if ((flags & ORIG_NAME) != 0)
while (hdr[hdrlen++] != 0)
;
if ((flags & COMMENT) != 0)
while (hdr[hdrlen++] != 0)
;
if ((flags & HEAD_CRC) != 0)
hdrlen += 2;
if (hdrlen >= srclen)
fatal("gunzip_start: ran out of data in header\n\r");
r = zlib_inflateInit2(&state->s, -MAX_WBITS);
if (r != Z_OK)
fatal("inflateInit2 returned %d\n\r", r);
}
state->s.total_in = hdrlen;
state->s.next_in = src + hdrlen;
state->s.avail_in = srclen - hdrlen;
}
/**
* gunzip_partial - extract bytes from a gzip data stream
* @state: gzip state structure previously initialized by gunzip_start()
* @dst: buffer to store extracted data
* @dstlen: maximum number of bytes to extract
*
* This function extracts at most @dstlen bytes from the data stream
* previously associated with @state by gunzip_start(), decompressing
* if necessary. Exactly @dstlen bytes are extracted unless the data
* stream doesn't contain enough bytes, in which case the entire
* remainder of the stream is decompressed.
*
* Returns the actual number of bytes extracted. If any errors occur,
* such as a corrupted compressed stream, an error is printed an the
* platform's exit() function is called.
*/
int gunzip_partial(struct gunzip_state *state, void *dst, int dstlen)
{
int len;
if (state->s.workspace) {
/* gunzipping */
int r;
state->s.next_out = dst;
state->s.avail_out = dstlen;
r = zlib_inflate(&state->s, Z_FULL_FLUSH);
if (r != Z_OK && r != Z_STREAM_END)
fatal("inflate returned %d msg: %s\n\r", r, state->s.msg);
len = state->s.next_out - (Byte *)dst;
} else {
/* uncompressed image */
len = min(state->s.avail_in, (uLong)dstlen);
memcpy(dst, state->s.next_in, len);
state->s.next_in += len;
state->s.avail_in -= len;
}
return len;
}
/**
* gunzip_exactly - extract a fixed number of bytes from a gzip data stream
* @state: gzip state structure previously initialized by gunzip_start()
* @dst: buffer to store extracted data
* @dstlen: number of bytes to extract
*
* This function extracts exactly @dstlen bytes from the data stream
* previously associated with @state by gunzip_start(), decompressing
* if necessary.
*
* If there are less @dstlen bytes available in the data stream, or if
* any other errors occur, such as a corrupted compressed stream, an
* error is printed an the platform's exit() function is called.
*/
void gunzip_exactly(struct gunzip_state *state, void *dst, int dstlen)
{
int len;
len = gunzip_partial(state, dst, dstlen);
if (len < dstlen)
fatal("\n\rgunzip_exactly: ran out of data!"
" Wanted %d, got %d.\n\r", dstlen, len);
}
/**
* gunzip_discard - discard bytes from a gzip data stream
* @state: gzip state structure previously initialized by gunzip_start()
* @len: number of bytes to discard
*
* This function extracts, then discards exactly @len bytes from the
* data stream previously associated with @state by gunzip_start().
* Subsequent gunzip_partial(), gunzip_exactly() or gunzip_finish()
* calls will extract the data following the discarded bytes in the
* data stream.
*
* If there are less @len bytes available in the data stream, or if
* any other errors occur, such as a corrupted compressed stream, an
* error is printed an the platform's exit() function is called.
*/
void gunzip_discard(struct gunzip_state *state, int len)
{
static char discard_buf[128];
while (len > sizeof(discard_buf)) {
gunzip_exactly(state, discard_buf, sizeof(discard_buf));
len -= sizeof(discard_buf);
}
if (len > 0)
gunzip_exactly(state, discard_buf, len);
}
/**
* gunzip_finish - extract all remaining bytes from a gzip data stream
* @state: gzip state structure previously initialized by gunzip_start()
* @dst: buffer to store extracted data
* @dstlen: maximum number of bytes to extract
*
* This function extracts all remaining data, or at most @dstlen
* bytes, from the stream previously associated with @state by
* gunzip_start(). zlib is then shut down, so it is an error to use
* any of the functions in this file on @state until it is
* re-initialized with another call to gunzip_start().
*
* If any errors occur, such as a corrupted compressed stream, an
* error is printed an the platform's exit() function is called.
*/
int gunzip_finish(struct gunzip_state *state, void *dst, int dstlen)
{
int len;
len = gunzip_partial(state, dst, dstlen);
if (state->s.workspace) {
zlib_inflateEnd(&state->s);
}
return len;
}

45
arch/powerpc/boot/gunzip_util.h
View file

@ -1,45 +0,0 @@
/*
* Decompression convenience functions
*
* Copyright 2007 David Gibson, IBM Corporation.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef _PPC_BOOT_GUNZIP_UTIL_H_
#define _PPC_BOOT_GUNZIP_UTIL_H_
#include "zlib.h"
/*
* These functions are designed to make life easy for decompressing
* kernel images, initrd images or any other gzip compressed image,
* particularly if its useful to decompress part of the image (e.g. to
* examine headers) before decompressing the remainder.
*
* To use:
* - declare a gunzip_state structure
* - use gunzip_start() to initialize the state, associating it
* with a stream of compressed data
* - use gunzip_partial(), gunzip_exactly() and gunzip_discard()
* in any combination to extract pieces of data from the stream
* - Finally use gunzip_finish() to extract the tail of the
* compressed stream and wind up zlib
*/
/* scratch space for gunzip; 46912 is from zlib_inflate_workspacesize() */
#define GUNZIP_SCRATCH_SIZE 46912
struct gunzip_state {
z_stream s;
char scratch[46912];
};
void gunzip_start(struct gunzip_state *state, void *src, int srclen);
int gunzip_partial(struct gunzip_state *state, void *dst, int dstlen);
void gunzip_exactly(struct gunzip_state *state, void *dst, int len);
void gunzip_discard(struct gunzip_state *state, int len);
int gunzip_finish(struct gunzip_state *state, void *dst, int len);
#endif /* _PPC_BOOT_GUNZIP_UTIL_H_ */

35
arch/powerpc/boot/main.c
View file

@ -15,11 +15,8 @@
#include "string.h"
#include "stdio.h"
#include "ops.h"
#include "gunzip_util.h"
#include "reg.h"
static struct gunzip_state gzstate;
struct addr_range {
void *addr;
unsigned long size;
@ -30,15 +27,14 @@ struct addr_range {
static struct addr_range prep_kernel(void)
{
char elfheader[256];
void *vmlinuz_addr = _vmlinux_start;
unsigned char *vmlinuz_addr = (unsigned char *)_vmlinux_start;
unsigned long vmlinuz_size = _vmlinux_end - _vmlinux_start;
void *addr = 0;
struct elf_info ei;
int len;
long len;
/* gunzip the ELF header of the kernel */
gunzip_start(&gzstate, vmlinuz_addr, vmlinuz_size);
gunzip_exactly(&gzstate, elfheader, sizeof(elfheader));
partial_decompress(vmlinuz_addr, vmlinuz_size,
elfheader, sizeof(elfheader), 0);
if (!parse_elf64(elfheader, &ei) && !parse_elf32(elfheader, &ei))
fatal("Error: not a valid PPC32 or PPC64 ELF file!\n\r");
@ -51,7 +47,7 @@ static struct addr_range prep_kernel(void)
* the kernel bss must be claimed (it will be zero'd by the
* kernel itself)
*/
printf("Allocating 0x%lx bytes for kernel ...\n\r", ei.memsize);
printf("Allocating 0x%lx bytes for kernel...\n\r", ei.memsize);
if (platform_ops.vmlinux_alloc) {
addr = platform_ops.vmlinux_alloc(ei.memsize);
@ -71,16 +67,21 @@ static struct addr_range prep_kernel(void)
"device tree\n\r");
}
/* Finally, gunzip the kernel */
printf("gunzipping (0x%p <- 0x%p:0x%p)...", addr,
/* Finally, decompress the kernel */
printf("Decompressing (0x%p <- 0x%p:0x%p)...\n\r", addr,
vmlinuz_addr, vmlinuz_addr+vmlinuz_size);
/* discard up to the actual load data */
gunzip_discard(&gzstate, ei.elfoffset - sizeof(elfheader));
len = gunzip_finish(&gzstate, addr, ei.loadsize);
len = partial_decompress(vmlinuz_addr, vmlinuz_size,
addr, ei.loadsize, ei.elfoffset);
if (len < 0)
fatal("Decompression failed with error code %ld\n\r", len);
if (len != ei.loadsize)
fatal("ran out of data! only got 0x%x of 0x%lx bytes.\n\r",
len, ei.loadsize);
printf("done 0x%x bytes\n\r", len);
fatal("Decompression error: got 0x%lx bytes, expected 0x%lx.\n\r",
len, ei.loadsize);
printf("Done! Decompressed 0x%lx bytes\n\r", len);
flush_cache(addr, ei.loadsize);

3
arch/powerpc/boot/ops.h
View file

@ -260,4 +260,7 @@ int __ilog2_u32(u32 n)
return 31 - bit;
}
long partial_decompress(void *inbuf, unsigned long input_size, void *outbuf,
unsigned long output_size, unsigned long skip);
#endif /* _PPC_BOOT_OPS_H_ */

14
arch/powerpc/boot/stdbool.h Normal file
View file

@ -0,0 +1,14 @@
/*
* Copyright (C) IBM Corporation 2016.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* This file is only necessary because some of the pre-boot decompressors
* expect stdbool.h to be available.
*
*/
#include "types.h"

13
arch/powerpc/boot/stdint.h Normal file
View file

@ -0,0 +1,13 @@
/*
* Copyright (C) IBM Corporation 2016.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* This file is only necessary because some of the pre-boot decompressors
* expect stdint.h to be available.
*/
#include "types.h"

14
arch/powerpc/boot/types.h
View file

@ -1,6 +1,8 @@
#ifndef _TYPES_H_
#define _TYPES_H_
#include <stdbool.h>
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
typedef unsigned char u8;
@ -34,4 +36,16 @@ typedef s64 int64_t;
(void) (&_x == &_y); \
_x > _y ? _x : _y; })
#define min_t(type, a, b) min(((type) a), ((type) b))
#define max_t(type, a, b) max(((type) a), ((type) b))
typedef int bool;
#ifndef true
#define true 1
#endif
#ifndef false
#define false 0
#endif
#endif /* _TYPES_H_ */

61
arch/powerpc/boot/wrapper
View file

@ -20,6 +20,8 @@
# -D dir specify directory containing data files used by script
# (default ./arch/powerpc/boot)
# -W dir specify working directory for temporary files (default .)
# -z use gzip (legacy)
# -Z zsuffix compression to use (gz, xz or none)
# Stop execution if any command fails
set -e
@ -38,7 +40,7 @@ dtb=
dts=
cacheit=
binary=
gzip=.gz
compression=.gz
pie=
format=
@ -59,7 +61,8 @@ tmpdir=.
usage() {
echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
echo ' [-D datadir] [-W workingdir] [-Z (gz|xz|none)]' >&2
echo ' [--no-compression] [vmlinux]' >&2
exit 1
}
@ -126,8 +129,24 @@ while [ "$#" -gt 0 ]; do
[ "$#" -gt 0 ] || usage
tmpdir="$1"
;;
-z)
compression=.gz
;;
-Z)
shift
[ "$#" -gt 0 ] || usage
[ "$1" != "gz" -o "$1" != "xz" -o "$1" != "none" ] || usage
compression=".$1"
if [ $compression = ".none" ]; then
compression=
fi
;;
--no-gzip)
gzip=
# a "feature" of the the wrapper script is that it can be used outside
# the kernel tree. So keeping this around for backwards compatibility.
compression=
;;
-?)
usage
@ -140,6 +159,7 @@ while [ "$#" -gt 0 ]; do
shift
done
if [ -n "$dts" ]; then
if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
dts="$object/dts/$dts"
@ -212,7 +232,7 @@ miboot|uboot*)
;;
cuboot*)
binary=y
gzip=
compression=
case "$platform" in
*-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
platformo=$object/cuboot-8xx.o
@ -243,7 +263,7 @@ cuboot*)
ps3)
platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
lds=$object/zImage.ps3.lds
gzip=
compression=
ext=bin
objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
ksection=.kernel:vmlinux.bin
@ -310,27 +330,37 @@ mvme7100)
esac
vmz="$tmpdir/`basename \"$kernel\"`.$ext"
if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
strip_size=$(stat -c %s $vmz.$$)
# Calculate the vmlinux.strip size
${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
strip_size=$(stat -c %s $vmz.$$)
if [ -n "$gzip" ]; then
if [ -z "$cacheit" -o ! -f "$vmz$compression" -o "$vmz$compression" -ot "$kernel" ]; then
# recompress the image if we need to
case $compression in
.xz)
xz --check=crc32 -f -6 "$vmz.$$"
;;
.gz)
gzip -n -f -9 "$vmz.$$"
fi
;;
*)
# drop the compression suffix so the stripped vmlinux is used
compression=
;;
esac
if [ -n "$cacheit" ]; then
mv -f "$vmz.$$$gzip" "$vmz$gzip"
mv -f "$vmz.$$$compression" "$vmz$compression"
else
vmz="$vmz.$$"
fi
else
# Calculate the vmlinux.strip size
${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
strip_size=$(stat -c %s $vmz.$$)
rm -f $vmz.$$
fi
vmz="$vmz$compression"
if [ "$make_space" = "y" ]; then
# Round the size to next higher MB limit
round_size=$(((strip_size + 0xfffff) & 0xfff00000))
@ -346,8 +376,6 @@ if [ "$make_space" = "y" ]; then
fi
fi
vmz="$vmz$gzip"
# Extract kernel version information, some platforms want to include
# it in the image header
version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
@ -417,6 +445,7 @@ if [ "$platform" != "miboot" ]; then
if [ -n "$link_address" ] ; then
text_start="-Ttext $link_address"
fi
#link everything
${CROSS}ld -m $format -T $lds $text_start $pie -o "$ofile" \
$platformo $tmp $object/wrapper.a
rm $tmp

39
arch/powerpc/boot/xz_config.h Normal file
View file

@ -0,0 +1,39 @@
#ifndef __XZ_CONFIG_H__
#define __XZ_CONFIG_H__
/*
* most of this is copied from lib/xz/xz_private.h, we can't use their defines
* since the boot wrapper is not built in the same environment as the rest of
* the kernel.
*/
#include "types.h"
#include "swab.h"
static inline uint32_t swab32p(void *p)
{
uint32_t *q = p;
return swab32(*q);
}
#ifdef __LITTLE_ENDIAN__
#define get_le32(p) (*((uint32_t *) (p)))
#else
#define get_le32(p) swab32p(p)
#endif
#define memeq(a, b, size) (memcmp(a, b, size) == 0)
#define memzero(buf, size) memset(buf, 0, size)
/* prevent the inclusion of the xz-preboot MM headers */
#define DECOMPR_MM_H
#define memmove memmove
#define XZ_EXTERN static
/* xz.h needs to be included directly since we need enum xz_mode */
#include "../../../include/linux/xz.h"
#undef XZ_EXTERN
#endif

19
arch/powerpc/configs/powernv_defconfig
View file

@ -15,6 +15,8 @@ CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=18
CONFIG_LOG_CPU_MAX_BUF_SHIFT=13
CONFIG_NUMA_BALANCING=y
CONFIG_CGROUPS=y
CONFIG_MEMCG=y
@ -95,7 +97,7 @@ CONFIG_BLK_DEV_IDECD=y
CONFIG_BLK_DEV_GENERIC=y
CONFIG_BLK_DEV_AMD74XX=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
CONFIG_CHR_DEV_ST=m
CONFIG_BLK_DEV_SR=y
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_CHR_DEV_SG=y
@ -107,7 +109,7 @@ CONFIG_SCSI_CXGB4_ISCSI=m
CONFIG_SCSI_BNX2_ISCSI=m
CONFIG_BE2ISCSI=m
CONFIG_SCSI_MPT2SAS=m
CONFIG_SCSI_SYM53C8XX_2=y
CONFIG_SCSI_SYM53C8XX_2=m
CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=0
CONFIG_SCSI_IPR=y
CONFIG_SCSI_QLA_FC=m
@ -149,10 +151,10 @@ CONFIG_TUN=m
CONFIG_VETH=m
CONFIG_VIRTIO_NET=m
CONFIG_VHOST_NET=m
CONFIG_VORTEX=y
CONFIG_VORTEX=m
CONFIG_ACENIC=m
CONFIG_ACENIC_OMIT_TIGON_I=y
CONFIG_PCNET32=y
CONFIG_PCNET32=m
CONFIG_TIGON3=y
CONFIG_BNX2X=m
CONFIG_CHELSIO_T1=m
@ -163,6 +165,7 @@ CONFIG_E1000=y
CONFIG_E1000E=y
CONFIG_IXGB=m
CONFIG_IXGBE=m
CONFIG_I40E=m
CONFIG_MLX4_EN=m
CONFIG_MYRI10GE=m
CONFIG_QLGE=m
@ -238,7 +241,7 @@ CONFIG_EXT2_FS_SECURITY=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_REISERFS_FS=y
CONFIG_REISERFS_FS=m
CONFIG_REISERFS_FS_XATTR=y
CONFIG_REISERFS_FS_POSIX_ACL=y
CONFIG_REISERFS_FS_SECURITY=y
@ -253,10 +256,10 @@ CONFIG_NILFS2_FS=m
CONFIG_AUTOFS4_FS=m
CONFIG_FUSE_FS=m
CONFIG_OVERLAY_FS=m
CONFIG_ISO9660_FS=y
CONFIG_ISO9660_FS=m
CONFIG_UDF_FS=m
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_VFAT_FS=m
CONFIG_PROC_KCORE=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
@ -310,6 +313,8 @@ CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_LZO=m
CONFIG_CRYPTO_DEV_NX=y
CONFIG_CRYPTO_DEV_VMX=y
CONFIG_CRYPTO_DEV_VMX_ENCRYPT=m
CONFIG_VIRTUALIZATION=y
CONFIG_KVM_BOOK3S_64=m
CONFIG_KVM_BOOK3S_64_HV=m

19
arch/powerpc/configs/ppc64_defconfig
View file

@ -10,6 +10,8 @@ CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=18
CONFIG_LOG_CPU_MAX_BUF_SHIFT=13
CONFIG_CGROUPS=y
CONFIG_CPUSETS=y
CONFIG_BLK_DEV_INITRD=y
@ -90,7 +92,7 @@ CONFIG_BLK_DEV_AMD74XX=y
CONFIG_BLK_DEV_IDE_PMAC=y
CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
CONFIG_CHR_DEV_ST=m
CONFIG_BLK_DEV_SR=y
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_CHR_DEV_SG=y
@ -103,7 +105,7 @@ CONFIG_BE2ISCSI=m
CONFIG_SCSI_MPT2SAS=m
CONFIG_SCSI_IBMVSCSI=y
CONFIG_SCSI_IBMVFC=m
CONFIG_SCSI_SYM53C8XX_2=y
CONFIG_SCSI_SYM53C8XX_2=m
CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=0
CONFIG_SCSI_IPR=y
CONFIG_SCSI_QLA_FC=m
@ -149,10 +151,10 @@ CONFIG_NETCONSOLE=y
CONFIG_TUN=m
CONFIG_VIRTIO_NET=m
CONFIG_VHOST_NET=m
CONFIG_VORTEX=y
CONFIG_VORTEX=m
CONFIG_ACENIC=m
CONFIG_ACENIC_OMIT_TIGON_I=y
CONFIG_PCNET32=y
CONFIG_PCNET32=m
CONFIG_TIGON3=y
CONFIG_BNX2X=m
CONFIG_CHELSIO_T1=m
@ -165,6 +167,7 @@ CONFIG_E1000=y
CONFIG_E1000E=y
CONFIG_IXGB=m
CONFIG_IXGBE=m
CONFIG_I40E=m
CONFIG_MLX4_EN=m
CONFIG_MYRI10GE=m
CONFIG_PASEMI_MAC=y
@ -269,7 +272,7 @@ CONFIG_EXT2_FS_SECURITY=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_REISERFS_FS=y
CONFIG_REISERFS_FS=m
CONFIG_REISERFS_FS_XATTR=y
CONFIG_REISERFS_FS_POSIX_ACL=y
CONFIG_REISERFS_FS_SECURITY=y
@ -284,10 +287,10 @@ CONFIG_NILFS2_FS=m
CONFIG_AUTOFS4_FS=m
CONFIG_FUSE_FS=m
CONFIG_OVERLAY_FS=m
CONFIG_ISO9660_FS=y
CONFIG_ISO9660_FS=m
CONFIG_UDF_FS=m
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_VFAT_FS=m
CONFIG_PROC_KCORE=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
@ -347,6 +350,8 @@ CONFIG_CRYPTO_LZO=m
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRYPTO_DEV_NX=y
CONFIG_CRYPTO_DEV_NX_ENCRYPT=m
CONFIG_CRYPTO_DEV_VMX=y
CONFIG_CRYPTO_DEV_VMX_ENCRYPT=m
CONFIG_VIRTUALIZATION=y
CONFIG_KVM_BOOK3S_64=m
CONFIG_KVM_BOOK3S_64_HV=m

19
arch/powerpc/configs/pseries_defconfig
View file

@ -15,6 +15,8 @@ CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=18
CONFIG_LOG_CPU_MAX_BUF_SHIFT=13
CONFIG_NUMA_BALANCING=y
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y
CONFIG_CGROUPS=y
@ -95,7 +97,7 @@ CONFIG_BLK_DEV_IDECD=y
CONFIG_BLK_DEV_GENERIC=y
CONFIG_BLK_DEV_AMD74XX=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
CONFIG_CHR_DEV_ST=m
CONFIG_BLK_DEV_SR=y
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_CHR_DEV_SG=y
@ -108,7 +110,7 @@ CONFIG_BE2ISCSI=m
CONFIG_SCSI_MPT2SAS=m
CONFIG_SCSI_IBMVSCSI=y
CONFIG_SCSI_IBMVFC=m
CONFIG_SCSI_SYM53C8XX_2=y
CONFIG_SCSI_SYM53C8XX_2=m
CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=0
CONFIG_SCSI_IPR=y
CONFIG_SCSI_QLA_FC=m
@ -150,10 +152,10 @@ CONFIG_TUN=m
CONFIG_VETH=m
CONFIG_VIRTIO_NET=m
CONFIG_VHOST_NET=m
CONFIG_VORTEX=y
CONFIG_VORTEX=m
CONFIG_ACENIC=m
CONFIG_ACENIC_OMIT_TIGON_I=y
CONFIG_PCNET32=y
CONFIG_PCNET32=m
CONFIG_TIGON3=y
CONFIG_BNX2X=m
CONFIG_CHELSIO_T1=m
@ -166,6 +168,7 @@ CONFIG_E1000=y
CONFIG_E1000E=y
CONFIG_IXGB=m
CONFIG_IXGBE=m
CONFIG_I40E=m
CONFIG_MLX4_EN=m
CONFIG_MYRI10GE=m
CONFIG_QLGE=m
@ -241,7 +244,7 @@ CONFIG_EXT2_FS_SECURITY=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_REISERFS_FS=y
CONFIG_REISERFS_FS=m
CONFIG_REISERFS_FS_XATTR=y
CONFIG_REISERFS_FS_POSIX_ACL=y
CONFIG_REISERFS_FS_SECURITY=y
@ -256,10 +259,10 @@ CONFIG_NILFS2_FS=m
CONFIG_AUTOFS4_FS=m
CONFIG_FUSE_FS=m
CONFIG_OVERLAY_FS=m
CONFIG_ISO9660_FS=y
CONFIG_ISO9660_FS=m
CONFIG_UDF_FS=m
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_VFAT_FS=m
CONFIG_PROC_KCORE=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
@ -314,6 +317,8 @@ CONFIG_CRYPTO_LZO=m
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRYPTO_DEV_NX=y
CONFIG_CRYPTO_DEV_NX_ENCRYPT=m
CONFIG_CRYPTO_DEV_VMX=y
CONFIG_CRYPTO_DEV_VMX_ENCRYPT=m
CONFIG_VIRTUALIZATION=y
CONFIG_KVM_BOOK3S_64=m
CONFIG_KVM_BOOK3S_64_HV=m

43
arch/powerpc/include/asm/asm-prototypes.h
View file

@ -15,6 +15,8 @@
#include <linux/threads.h>
#include <linux/kprobes.h>
#include <uapi/asm/ucontext.h>
/* SMP */
extern struct thread_info *current_set[NR_CPUS];
extern struct thread_info *secondary_ti;
@ -52,8 +54,8 @@ void SMIException(struct pt_regs *regs);
void handle_hmi_exception(struct pt_regs *regs);
void instruction_breakpoint_exception(struct pt_regs *regs);
void RunModeException(struct pt_regs *regs);
void __kprobes single_step_exception(struct pt_regs *regs);
void __kprobes program_check_exception(struct pt_regs *regs);
void single_step_exception(struct pt_regs *regs);
void program_check_exception(struct pt_regs *regs);
void alignment_exception(struct pt_regs *regs);
void StackOverflow(struct pt_regs *regs);
void nonrecoverable_exception(struct pt_regs *regs);
@ -70,6 +72,41 @@ void unrecoverable_exception(struct pt_regs *regs);
void kernel_bad_stack(struct pt_regs *regs);
void system_reset_exception(struct pt_regs *regs);
void machine_check_exception(struct pt_regs *regs);
void __kprobes emulation_assist_interrupt(struct pt_regs *regs);
void emulation_assist_interrupt(struct pt_regs *regs);
/* signals, syscalls and interrupts */
#ifdef CONFIG_PPC64
int sys_swapcontext(struct ucontext __user *old_ctx,
struct ucontext __user *new_ctx,
long ctx_size, long r6, long r7, long r8, struct pt_regs *regs);
#else
long sys_swapcontext(struct ucontext __user *old_ctx,
struct ucontext __user *new_ctx,
int ctx_size, int r6, int r7, int r8, struct pt_regs *regs);
#endif
long sys_switch_endian(void);
notrace unsigned int __check_irq_replay(void);
void notrace restore_interrupts(void);
/* ptrace */
long do_syscall_trace_enter(struct pt_regs *regs);
void do_syscall_trace_leave(struct pt_regs *regs);
/* process */
void restore_math(struct pt_regs *regs);
void restore_tm_state(struct pt_regs *regs);
/* prom_init (OpenFirmware) */
unsigned long __init prom_init(unsigned long r3, unsigned long r4,
unsigned long pp,
unsigned long r6, unsigned long r7,
unsigned long kbase);
/* setup */
void __init early_setup(unsigned long dt_ptr);
void early_setup_secondary(void);
/* time */
void accumulate_stolen_time(void);
#endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */

4
arch/powerpc/include/asm/atomic.h
View file

@ -233,7 +233,7 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
PPC_ATOMIC_ENTRY_BARRIER
"1: lwarx %0,0,%1 # __atomic_add_unless\n\
cmpw 0,%0,%3 \n\
beq- 2f \n\
beq 2f \n\
add %0,%2,%0 \n"
PPC405_ERR77(0,%2)
" stwcx. %0,0,%1 \n\
@ -539,7 +539,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
PPC_ATOMIC_ENTRY_BARRIER
"1: ldarx %0,0,%1 # __atomic_add_unless\n\
cmpd 0,%0,%3 \n\
beq- 2f \n\
beq 2f \n\
add %0,%2,%0 \n"
" stdcx. %0,0,%1 \n\
bne- 1b \n"

3
arch/powerpc/include/asm/book3s/32/pgtable.h
View file

@ -223,7 +223,8 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
}
static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry)
static inline void __ptep_set_access_flags(struct mm_struct *mm,
pte_t *ptep, pte_t entry)
{
unsigned long set = pte_val(entry) &
(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);

7
arch/powerpc/include/asm/book3s/64/pgtable.h
View file

@ -6,6 +6,8 @@
*/
#define _PAGE_BIT_SWAP_TYPE 0
#define _PAGE_RO 0
#define _PAGE_EXEC 0x00001 /* execute permission */
#define _PAGE_WRITE 0x00002 /* write access allowed */
#define _PAGE_READ 0x00004 /* read access allowed */
@ -565,10 +567,11 @@ static inline bool check_pte_access(unsigned long access, unsigned long ptev)
* Generic functions with hash/radix callbacks
*/
static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry)
static inline void __ptep_set_access_flags(struct mm_struct *mm,
pte_t *ptep, pte_t entry)
{
if (radix_enabled())
return radix__ptep_set_access_flags(ptep, entry);
return radix__ptep_set_access_flags(mm, ptep, entry);
return hash__ptep_set_access_flags(ptep, entry);
}

88
arch/powerpc/include/asm/book3s/64/radix.h
View file

@ -11,6 +11,11 @@
#include <asm/book3s/64/radix-4k.h>
#endif
#ifndef __ASSEMBLY__
#include <asm/book3s/64/tlbflush-radix.h>
#include <asm/cpu_has_feature.h>
#endif
/* An empty PTE can still have a R or C writeback */
#define RADIX_PTE_NONE_MASK (_PAGE_DIRTY | _PAGE_ACCESSED)
@ -105,11 +110,8 @@
#define RADIX_PUD_TABLE_SIZE (sizeof(pud_t) << RADIX_PUD_INDEX_SIZE)
#define RADIX_PGD_TABLE_SIZE (sizeof(pgd_t) << RADIX_PGD_INDEX_SIZE)
static inline unsigned long radix__pte_update(struct mm_struct *mm,
unsigned long addr,
pte_t *ptep, unsigned long clr,
unsigned long set,
int huge)
static inline unsigned long __radix_pte_update(pte_t *ptep, unsigned long clr,
unsigned long set)
{
pte_t pte;
unsigned long old_pte, new_pte;
@ -121,9 +123,39 @@ static inline unsigned long radix__pte_update(struct mm_struct *mm,
} while (!pte_xchg(ptep, __pte(old_pte), __pte(new_pte)));
/* We already do a sync in cmpxchg, is ptesync needed ?*/
return old_pte;
}
static inline unsigned long radix__pte_update(struct mm_struct *mm,
unsigned long addr,
pte_t *ptep, unsigned long clr,
unsigned long set,
int huge)
{
unsigned long old_pte;
if (cpu_has_feature(CPU_FTR_POWER9_DD1)) {
unsigned long new_pte;
old_pte = __radix_pte_update(ptep, ~0, 0);
asm volatile("ptesync" : : : "memory");
/*
* new value of pte
*/
new_pte = (old_pte | set) & ~clr;
/*
* For now let's do heavy pid flush
* radix__flush_tlb_page_psize(mm, addr, mmu_virtual_psize);
*/
radix__flush_tlb_mm(mm);
__radix_pte_update(ptep, 0, new_pte);
} else
old_pte = __radix_pte_update(ptep, clr, set);
asm volatile("ptesync" : : : "memory");
/* huge pages use the old page table lock */
if (!huge)
assert_pte_locked(mm, addr);
@ -134,20 +166,33 @@ static inline unsigned long radix__pte_update(struct mm_struct *mm,
* Set the dirty and/or accessed bits atomically in a linux PTE, this
* function doesn't need to invalidate tlb.
*/
static inline void radix__ptep_set_access_flags(pte_t *ptep, pte_t entry)
static inline void radix__ptep_set_access_flags(struct mm_struct *mm,
pte_t *ptep, pte_t entry)
{
pte_t pte;
unsigned long old_pte, new_pte;
unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED |
_PAGE_RW | _PAGE_EXEC);
do {
pte = READ_ONCE(*ptep);
old_pte = pte_val(pte);
if (cpu_has_feature(CPU_FTR_POWER9_DD1)) {
unsigned long old_pte, new_pte;
old_pte = __radix_pte_update(ptep, ~0, 0);
asm volatile("ptesync" : : : "memory");
/*
* new value of pte
*/
new_pte = old_pte | set;
} while (!pte_xchg(ptep, __pte(old_pte), __pte(new_pte)));
/*
* For now let's do heavy pid flush
* radix__flush_tlb_page_psize(mm, addr, mmu_virtual_psize);
*/
radix__flush_tlb_mm(mm);
/* We already do a sync in cmpxchg, is ptesync needed ?*/
__radix_pte_update(ptep, 0, new_pte);
} else
__radix_pte_update(ptep, 0, set);
asm volatile("ptesync" : : : "memory");
}
@ -233,14 +278,19 @@ static inline unsigned long radix__get_tree_size(void)
{
unsigned long rts_field;
/*
* we support 52 bits, hence 52-31 = 21, 0b10101
* We support 52 bits, hence:
* DD1 52-28 = 24, 0b11000
* Others 52-31 = 21, 0b10101
* RTS encoding details
* bits 0 - 3 of rts -> bits 6 - 8 unsigned long
* bits 4 - 5 of rts -> bits 62 - 63 of unsigned long
*/
rts_field = (0x5UL << 5); /* 6 - 8 bits */
rts_field |= (0x2UL << 61);
if (cpu_has_feature(CPU_FTR_POWER9_DD1))
rts_field = (0x3UL << 61);
else {
rts_field = (0x5UL << 5); /* 6 - 8 bits */
rts_field |= (0x2UL << 61);
}
return rts_field;
}
#endif /* __ASSEMBLY__ */

1
arch/powerpc/include/asm/book3s/64/tlbflush-radix.h
View file

@ -41,4 +41,5 @@ extern void radix__flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmad
extern void radix__flush_tlb_lpid_va(unsigned long lpid, unsigned long gpa,
unsigned long page_size);
extern void radix__flush_tlb_lpid(unsigned long lpid);
extern void radix__flush_tlb_all(void);
#endif

4
arch/powerpc/include/asm/cputable.h
View file

@ -212,6 +212,7 @@ enum {
#define CPU_FTR_DABRX LONG_ASM_CONST(0x0800000000000000)
#define CPU_FTR_PMAO_BUG LONG_ASM_CONST(0x1000000000000000)
#define CPU_FTR_SUBCORE LONG_ASM_CONST(0x2000000000000000)
#define CPU_FTR_POWER9_DD1 LONG_ASM_CONST(0x4000000000000000)
#ifndef __ASSEMBLY__
@ -472,6 +473,7 @@ enum {
CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \
CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \
CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_ARCH_300)
#define CPU_FTRS_POWER9_DD1 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD1)
#define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \
@ -490,7 +492,7 @@ enum {
(CPU_FTRS_POWER4 | CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \
CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \
CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL | \
CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9)
CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9 | CPU_FTRS_POWER9_DD1)
#endif
#else
enum {

146
arch/powerpc/include/asm/exception-64s.h
View file

@ -34,6 +34,7 @@
* exception handlers (including pSeries LPAR) and iSeries LPAR
* implementations as possible.
*/
#include <asm/head-64.h>
#define EX_R9 0
#define EX_R10 8
@ -52,7 +53,6 @@
#ifdef CONFIG_RELOCATABLE
#define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \
ld r12,PACAKBASE(r13); /* get high part of &label */ \
mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \
LOAD_HANDLER(r12,label); \
mtctr r12; \
@ -84,13 +84,14 @@
/*
* We're short on space and time in the exception prolog, so we can't
* use the normal SET_REG_IMMEDIATE macro. Normally we just need the
* low halfword of the address, but for Kdump we need the whole low
* word.
* use the normal LOAD_REG_IMMEDIATE macro to load the address of label.
* Instead we get the base of the kernel from paca->kernelbase and or in the low
* part of label. This requires that the label be within 64KB of kernelbase, and
* that kernelbase be 64K aligned.
*/
#define LOAD_HANDLER(reg, label) \
/* Handlers must be within 64K of kbase, which must be 64k aligned */ \
ori reg,reg,(label)-_stext; /* virt addr of handler ... */
ld reg,PACAKBASE(r13); /* get high part of &label */ \
ori reg,reg,(FIXED_SYMBOL_ABS_ADDR(label))@l;
/* Exception register prefixes */
#define EXC_HV H
@ -175,7 +176,6 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
__EXCEPTION_PROLOG_1(area, extra, vec)
#define __EXCEPTION_PROLOG_PSERIES_1(label, h) \
ld r12,PACAKBASE(r13); /* get high part of &label */ \
ld r10,PACAKMSR(r13); /* get MSR value for kernel */ \
mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \
LOAD_HANDLER(r12,label) \
@ -192,10 +192,10 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
EXCEPTION_PROLOG_1(area, extra, vec); \
EXCEPTION_PROLOG_PSERIES_1(label, h);
#define __KVMTEST(n) \
lbz r10,HSTATE_IN_GUEST(r13); \
#define __KVMTEST(h, n) \
lbz r10,HSTATE_IN_GUEST(r13); \
cmpwi r10,0; \
bne do_kvm_##n
bne do_kvm_##h##n
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
/*
@ -208,8 +208,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define kvmppc_interrupt kvmppc_interrupt_pr
#endif
#define __KVM_HANDLER(area, h, n) \
do_kvm_##n: \
#define __KVM_HANDLER_PROLOG(area, n) \
BEGIN_FTR_SECTION_NESTED(947) \
ld r10,area+EX_CFAR(r13); \
std r10,HSTATE_CFAR(r13); \
@ -222,21 +221,23 @@ do_kvm_##n: \
stw r9,HSTATE_SCRATCH1(r13); \
ld r9,area+EX_R9(r13); \
std r12,HSTATE_SCRATCH0(r13); \
#define __KVM_HANDLER(area, h, n) \
__KVM_HANDLER_PROLOG(area, n) \
li r12,n; \
b kvmppc_interrupt
#define __KVM_HANDLER_SKIP(area, h, n) \
do_kvm_##n: \
cmpwi r10,KVM_GUEST_MODE_SKIP; \
ld r10,area+EX_R10(r13); \
beq 89f; \
stw r9,HSTATE_SCRATCH1(r13); \
stw r9,HSTATE_SCRATCH1(r13); \
BEGIN_FTR_SECTION_NESTED(948) \
ld r9,area+EX_PPR(r13); \
std r9,HSTATE_PPR(r13); \
END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,948); \
ld r9,area+EX_R9(r13); \
std r12,HSTATE_SCRATCH0(r13); \
std r12,HSTATE_SCRATCH0(r13); \
li r12,n; \
b kvmppc_interrupt; \
89: mtocrf 0x80,r9; \
@ -244,12 +245,12 @@ do_kvm_##n: \
b kvmppc_skip_##h##interrupt
#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
#define KVMTEST(n) __KVMTEST(n)
#define KVMTEST(h, n) __KVMTEST(h, n)
#define KVM_HANDLER(area, h, n) __KVM_HANDLER(area, h, n)
#define KVM_HANDLER_SKIP(area, h, n) __KVM_HANDLER_SKIP(area, h, n)
#else
#define KVMTEST(n)
#define KVMTEST(h, n)
#define KVM_HANDLER(area, h, n)
#define KVM_HANDLER_SKIP(area, h, n)
#endif
@ -333,94 +334,79 @@ do_kvm_##n: \
/*
* Exception vectors.
*/
#define STD_EXCEPTION_PSERIES(vec, label) \
. = vec; \
.globl label##_pSeries; \
label##_pSeries: \
#define STD_EXCEPTION_PSERIES(vec, label) \
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, \
EXC_STD, KVMTEST, vec)
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label, \
EXC_STD, KVMTEST_PR, vec); \
/* Version of above for when we have to branch out-of-line */
#define __OOL_EXCEPTION(vec, label, hdlr) \
SET_SCRATCH0(r13) \
EXCEPTION_PROLOG_0(PACA_EXGEN) \
b hdlr;
#define STD_EXCEPTION_PSERIES_OOL(vec, label) \
.globl label##_pSeries; \
label##_pSeries: \
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST, vec); \
EXCEPTION_PROLOG_PSERIES_1(label##_common, EXC_STD)
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, vec); \
EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD)
#define STD_EXCEPTION_HV(loc, vec, label) \
. = loc; \
.globl label##_hv; \
label##_hv: \
#define STD_EXCEPTION_HV(loc, vec, label) \
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, \
EXC_HV, KVMTEST, vec)
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label, \
EXC_HV, KVMTEST_HV, vec);
/* Version of above for when we have to branch out-of-line */
#define STD_EXCEPTION_HV_OOL(vec, label) \
.globl label##_hv; \
label##_hv: \
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST, vec); \
EXCEPTION_PROLOG_PSERIES_1(label##_common, EXC_HV)
#define STD_EXCEPTION_HV_OOL(vec, label) \
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, vec); \
EXCEPTION_PROLOG_PSERIES_1(label, EXC_HV)
#define STD_RELON_EXCEPTION_PSERIES(loc, vec, label) \
. = loc; \
.globl label##_relon_pSeries; \
label##_relon_pSeries: \
/* No guest interrupts come through here */ \
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label##_common, \
EXC_STD, NOTEST, vec)
EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label, EXC_STD, NOTEST, vec);
#define STD_RELON_EXCEPTION_PSERIES_OOL(vec, label) \
.globl label##_relon_pSeries; \
label##_relon_pSeries: \
EXCEPTION_PROLOG_1(PACA_EXGEN, NOTEST, vec); \
EXCEPTION_RELON_PROLOG_PSERIES_1(label##_common, EXC_STD)
EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_STD)
#define STD_RELON_EXCEPTION_HV(loc, vec, label) \
. = loc; \
.globl label##_relon_hv; \
label##_relon_hv: \
/* No guest interrupts come through here */ \
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label##_common, \
EXC_HV, NOTEST, vec)
EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label, EXC_HV, NOTEST, vec);
#define STD_RELON_EXCEPTION_HV_OOL(vec, label) \
.globl label##_relon_hv; \
label##_relon_hv: \
EXCEPTION_PROLOG_1(PACA_EXGEN, NOTEST, vec); \
EXCEPTION_RELON_PROLOG_PSERIES_1(label##_common, EXC_HV)
EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_HV)
/* This associate vector numbers with bits in paca->irq_happened */
#define SOFTEN_VALUE_0x500 PACA_IRQ_EE
#define SOFTEN_VALUE_0x502 PACA_IRQ_EE
#define SOFTEN_VALUE_0x900 PACA_IRQ_DEC
#define SOFTEN_VALUE_0x982 PACA_IRQ_DEC
#define SOFTEN_VALUE_0x980 PACA_IRQ_DEC
#define SOFTEN_VALUE_0xa00 PACA_IRQ_DBELL
#define SOFTEN_VALUE_0xe80 PACA_IRQ_DBELL
#define SOFTEN_VALUE_0xe82 PACA_IRQ_DBELL
#define SOFTEN_VALUE_0xe60 PACA_IRQ_HMI
#define SOFTEN_VALUE_0xe62 PACA_IRQ_HMI
#define SOFTEN_VALUE_0xea0 PACA_IRQ_EE
#define SOFTEN_VALUE_0xea2 PACA_IRQ_EE
#define __SOFTEN_TEST(h, vec) \
lbz r10,PACASOFTIRQEN(r13); \
cmpwi r10,0; \
li r10,SOFTEN_VALUE_##vec; \
beq masked_##h##interrupt
#define _SOFTEN_TEST(h, vec) __SOFTEN_TEST(h, vec)
#define SOFTEN_TEST_PR(vec) \
KVMTEST(vec); \
KVMTEST(EXC_STD, vec); \
_SOFTEN_TEST(EXC_STD, vec)
#define SOFTEN_TEST_HV(vec) \
KVMTEST(vec); \
KVMTEST(EXC_HV, vec); \
_SOFTEN_TEST(EXC_HV, vec)
#define KVMTEST_PR(vec) \
KVMTEST(EXC_STD, vec)
#define KVMTEST_HV(vec) \
KVMTEST(EXC_HV, vec)
#define SOFTEN_NOTEST_PR(vec) _SOFTEN_TEST(EXC_STD, vec)
#define SOFTEN_NOTEST_HV(vec) _SOFTEN_TEST(EXC_HV, vec)
@ -428,58 +414,47 @@ label##_relon_hv: \
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_0(PACA_EXGEN); \
__EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec); \
EXCEPTION_PROLOG_PSERIES_1(label##_common, h);
EXCEPTION_PROLOG_PSERIES_1(label, h);
#define _MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) \
__MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra)
#define MASKABLE_EXCEPTION_PSERIES(loc, vec, label) \
. = loc; \
.globl label##_pSeries; \
label##_pSeries: \
_MASKABLE_EXCEPTION_PSERIES(vec, label, \
EXC_STD, SOFTEN_TEST_PR)
#define MASKABLE_EXCEPTION_PSERIES_OOL(vec, label) \
EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_PR, vec); \
EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD)
#define MASKABLE_EXCEPTION_HV(loc, vec, label) \
. = loc; \
.globl label##_hv; \
label##_hv: \
_MASKABLE_EXCEPTION_PSERIES(vec, label, \
EXC_HV, SOFTEN_TEST_HV)
#define MASKABLE_EXCEPTION_HV_OOL(vec, label) \
.globl label##_hv; \
label##_hv: \
EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec); \
EXCEPTION_PROLOG_PSERIES_1(label##_common, EXC_HV);
EXCEPTION_PROLOG_PSERIES_1(label, EXC_HV)
#define __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra) \
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_0(PACA_EXGEN); \
__EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec); \
EXCEPTION_RELON_PROLOG_PSERIES_1(label##_common, h);
#define _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra) \
__EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec); \
EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)
#define _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra) \
__MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra)
#define MASKABLE_RELON_EXCEPTION_PSERIES(loc, vec, label) \
. = loc; \
.globl label##_relon_pSeries; \
label##_relon_pSeries: \
_MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, \
EXC_STD, SOFTEN_NOTEST_PR)
#define MASKABLE_RELON_EXCEPTION_HV(loc, vec, label) \
. = loc; \
.globl label##_relon_hv; \
label##_relon_hv: \
_MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, \
EXC_HV, SOFTEN_NOTEST_HV)
#define MASKABLE_RELON_EXCEPTION_HV_OOL(vec, label) \
.globl label##_relon_hv; \
label##_relon_hv: \
EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_NOTEST_HV, vec); \
EXCEPTION_PROLOG_PSERIES_1(label##_common, EXC_HV);
EXCEPTION_PROLOG_PSERIES_1(label, EXC_HV)
/*
* Our exception common code can be passed various "additions"
@ -505,9 +480,6 @@ BEGIN_FTR_SECTION \
END_FTR_SECTION_IFSET(CPU_FTR_CTRL)
#define EXCEPTION_COMMON(trap, label, hdlr, ret, additions) \
.align 7; \
.globl label##_common; \
label##_common: \
EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN); \
/* Volatile regs are potentially clobbered here */ \
additions; \

4
arch/powerpc/include/asm/fadump.h
View file

@ -45,10 +45,6 @@
#define memblock_num_regions(memblock_type) (memblock.memblock_type.cnt)
#ifndef ELF_CORE_EFLAGS
#define ELF_CORE_EFLAGS 0
#endif
/* Firmware provided dump sections */
#define FADUMP_CPU_STATE_DATA 0x0001
#define FADUMP_HPTE_REGION 0x0002

393
arch/powerpc/include/asm/head-64.h Normal file
View file

@ -0,0 +1,393 @@
#ifndef _ASM_POWERPC_HEAD_64_H
#define _ASM_POWERPC_HEAD_64_H
#include <asm/cache.h>
/*
* We can't do CPP stringification and concatination directly into the section
* name for some reason, so these macros can do it for us.
*/
.macro define_ftsec name
.section ".head.text.\name\()","ax",@progbits
.endm
.macro define_data_ftsec name
.section ".head.data.\name\()","a",@progbits
.endm
.macro use_ftsec name
.section ".head.text.\name\()"
.endm
/*
* Fixed (location) sections are used by opening fixed sections and emitting
* fixed section entries into them before closing them. Multiple fixed sections
* can be open at any time.
*
* Each fixed section created in a .S file must have corresponding linkage
* directives including location, added to arch/powerpc/kernel/vmlinux.lds.S
*
* For each fixed section, code is generated into it in the order which it
* appears in the source. Fixed section entries can be placed at a fixed
* location within the section using _LOCATION postifx variants. These must
* be ordered according to their relative placements within the section.
*
* OPEN_FIXED_SECTION(section_name, start_address, end_address)
* FIXED_SECTION_ENTRY_BEGIN(section_name, label1)
*
* USE_FIXED_SECTION(section_name)
* label3:
* li r10,128
* mv r11,r10
* FIXED_SECTION_ENTRY_BEGIN_LOCATION(section_name, label2, start_address)
* FIXED_SECTION_ENTRY_END_LOCATION(section_name, label2, end_address)
* CLOSE_FIXED_SECTION(section_name)
*
* ZERO_FIXED_SECTION can be used to emit zeroed data.
*
* Troubleshooting:
* - If the build dies with "Error: attempt to move .org backwards" at
* CLOSE_FIXED_SECTION() or elsewhere, there may be something
* unexpected being added there. Remove the '. = x_len' line, rebuild, and
* check what is pushing the section down.
* - If the build dies in linking, check arch/powerpc/kernel/vmlinux.lds.S
* for instructions.
* - If the kernel crashes or hangs in very early boot, it could be linker
* stubs at the start of the main text.
*/
#define OPEN_FIXED_SECTION(sname, start, end) \
sname##_start = (start); \
sname##_end = (end); \
sname##_len = (end) - (start); \
define_ftsec sname; \
. = 0x0; \
start_##sname:
#define OPEN_TEXT_SECTION(start) \
text_start = (start); \
.section ".text","ax",@progbits; \
. = 0x0; \
start_text:
#define ZERO_FIXED_SECTION(sname, start, end) \
sname##_start = (start); \
sname##_end = (end); \
sname##_len = (end) - (start); \
define_data_ftsec sname; \
. = 0x0; \
. = sname##_len;
#define USE_FIXED_SECTION(sname) \
fs_label = start_##sname; \
fs_start = sname##_start; \
use_ftsec sname;
#define USE_TEXT_SECTION() \
fs_label = start_text; \
fs_start = text_start; \
.text
#define CLOSE_FIXED_SECTION(sname) \
USE_FIXED_SECTION(sname); \
. = sname##_len; \
end_##sname:
#define __FIXED_SECTION_ENTRY_BEGIN(sname, name, __align) \
USE_FIXED_SECTION(sname); \
.align __align; \
.global name; \
name:
#define FIXED_SECTION_ENTRY_BEGIN(sname, name) \
__FIXED_SECTION_ENTRY_BEGIN(sname, name, 0)
#define FIXED_SECTION_ENTRY_BEGIN_LOCATION(sname, name, start) \
USE_FIXED_SECTION(sname); \
name##_start = (start); \
.if (start) < sname##_start; \
.error "Fixed section underflow"; \
.abort; \
.endif; \
. = (start) - sname##_start; \
.global name; \
name:
#define FIXED_SECTION_ENTRY_END_LOCATION(sname, name, end) \
.if (end) > sname##_end; \
.error "Fixed section overflow"; \
.abort; \
.endif; \
.if (. - name > end - name##_start); \
.error "Fixed entry overflow"; \
.abort; \
.endif; \
. = ((end) - sname##_start); \
/*
* These macros are used to change symbols in other fixed sections to be
* absolute or related to our current fixed section.
*
* - DEFINE_FIXED_SYMBOL / FIXED_SYMBOL_ABS_ADDR is used to find the
* absolute address of a symbol within a fixed section, from any section.
*
* - ABS_ADDR is used to find the absolute address of any symbol, from within
* a fixed section.
*/
#define DEFINE_FIXED_SYMBOL(label) \
label##_absolute = (label - fs_label + fs_start)
#define FIXED_SYMBOL_ABS_ADDR(label) \
(label##_absolute)
#define ABS_ADDR(label) (label - fs_label + fs_start)
/*
* Following are the BOOK3S exception handler helper macros.
* Handlers come in a number of types, and each type has a number of varieties.
*
* EXC_REAL_* - real, unrelocated exception vectors
* EXC_VIRT_* - virt (AIL), unrelocated exception vectors
* TRAMP_REAL_* - real, unrelocated helpers (virt can call these)
* TRAMP_VIRT_* - virt, unreloc helpers (in practice, real can use)
* TRAMP_KVM - KVM handlers that get put into real, unrelocated
* EXC_COMMON_* - virt, relocated common handlers
*
* The EXC handlers are given a name, and branch to name_common, or the
* appropriate KVM or masking function. Vector handler verieties are as
* follows:
*
* EXC_{REAL|VIRT}_BEGIN/END - used to open-code the exception
*
* EXC_{REAL|VIRT} - standard exception
*
* EXC_{REAL|VIRT}_suffix
* where _suffix is:
* - _MASKABLE - maskable exception
* - _OOL - out of line with trampoline to common handler
* - _HV - HV exception
*
* There can be combinations, e.g., EXC_VIRT_OOL_MASKABLE_HV
*
* The one unusual case is __EXC_REAL_OOL_HV_DIRECT, which is
* an OOL vector that branches to a specified handler rather than the usual
* trampoline that goes to common. It, and other underscore macros, should
* be used with care.
*
* KVM handlers come in the following verieties:
* TRAMP_KVM
* TRAMP_KVM_SKIP
* TRAMP_KVM_HV
* TRAMP_KVM_HV_SKIP
*
* COMMON handlers come in the following verieties:
* EXC_COMMON_BEGIN/END - used to open-code the handler
* EXC_COMMON
* EXC_COMMON_ASYNC
* EXC_COMMON_HV
*
* TRAMP_REAL and TRAMP_VIRT can be used with BEGIN/END. KVM
* and OOL handlers are implemented as types of TRAMP and TRAMP_VIRT handlers.
*/
#define EXC_REAL_BEGIN(name, start, end) \
FIXED_SECTION_ENTRY_BEGIN_LOCATION(real_vectors, exc_real_##start##_##name, start)
#define EXC_REAL_END(name, start, end) \
FIXED_SECTION_ENTRY_END_LOCATION(real_vectors, exc_real_##start##_##name, end)
#define EXC_VIRT_BEGIN(name, start, end) \
FIXED_SECTION_ENTRY_BEGIN_LOCATION(virt_vectors, exc_virt_##start##_##name, start)
#define EXC_VIRT_END(name, start, end) \
FIXED_SECTION_ENTRY_END_LOCATION(virt_vectors, exc_virt_##start##_##name, end)
#define EXC_COMMON_BEGIN(name) \
USE_TEXT_SECTION(); \
.align 7; \
.global name; \
DEFINE_FIXED_SYMBOL(name); \
name:
#define TRAMP_REAL_BEGIN(name) \
FIXED_SECTION_ENTRY_BEGIN(real_trampolines, name)
#define TRAMP_VIRT_BEGIN(name) \
FIXED_SECTION_ENTRY_BEGIN(virt_trampolines, name)
#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
#define TRAMP_KVM_BEGIN(name) \
TRAMP_REAL_BEGIN(name)
#else
#define TRAMP_KVM_BEGIN(name)
#endif
#define EXC_REAL_NONE(start, end) \
FIXED_SECTION_ENTRY_BEGIN_LOCATION(real_vectors, exc_real_##start##_##unused, start); \
FIXED_SECTION_ENTRY_END_LOCATION(real_vectors, exc_real_##start##_##unused, end)
#define EXC_VIRT_NONE(start, end) \
FIXED_SECTION_ENTRY_BEGIN_LOCATION(virt_vectors, exc_virt_##start##_##unused, start); \
FIXED_SECTION_ENTRY_END_LOCATION(virt_vectors, exc_virt_##start##_##unused, end);
#define EXC_REAL(name, start, end) \
EXC_REAL_BEGIN(name, start, end); \
STD_EXCEPTION_PSERIES(start, name##_common); \
EXC_REAL_END(name, start, end);
#define EXC_VIRT(name, start, end, realvec) \
EXC_VIRT_BEGIN(name, start, end); \
STD_RELON_EXCEPTION_PSERIES(start, realvec, name##_common); \
EXC_VIRT_END(name, start, end);
#define EXC_REAL_MASKABLE(name, start, end) \
EXC_REAL_BEGIN(name, start, end); \
MASKABLE_EXCEPTION_PSERIES(start, start, name##_common); \
EXC_REAL_END(name, start, end);
#define EXC_VIRT_MASKABLE(name, start, end, realvec) \
EXC_VIRT_BEGIN(name, start, end); \
MASKABLE_RELON_EXCEPTION_PSERIES(start, realvec, name##_common); \
EXC_VIRT_END(name, start, end);
#define EXC_REAL_HV(name, start, end) \
EXC_REAL_BEGIN(name, start, end); \
STD_EXCEPTION_HV(start, start, name##_common); \
EXC_REAL_END(name, start, end);
#define EXC_VIRT_HV(name, start, end, realvec) \
EXC_VIRT_BEGIN(name, start, end); \
STD_RELON_EXCEPTION_HV(start, realvec, name##_common); \
EXC_VIRT_END(name, start, end);
#define __EXC_REAL_OOL(name, start, end) \
EXC_REAL_BEGIN(name, start, end); \
__OOL_EXCEPTION(start, label, tramp_real_##name); \
EXC_REAL_END(name, start, end);
#define __TRAMP_REAL_REAL_OOL(name, vec) \
TRAMP_REAL_BEGIN(tramp_real_##name); \
STD_EXCEPTION_PSERIES_OOL(vec, name##_common); \
#define EXC_REAL_OOL(name, start, end) \
__EXC_REAL_OOL(name, start, end); \
__TRAMP_REAL_REAL_OOL(name, start);
#define __EXC_REAL_OOL_MASKABLE(name, start, end) \
__EXC_REAL_OOL(name, start, end);
#define __TRAMP_REAL_REAL_OOL_MASKABLE(name, vec) \
TRAMP_REAL_BEGIN(tramp_real_##name); \
MASKABLE_EXCEPTION_PSERIES_OOL(vec, name##_common); \
#define EXC_REAL_OOL_MASKABLE(name, start, end) \
__EXC_REAL_OOL_MASKABLE(name, start, end); \
__TRAMP_REAL_REAL_OOL_MASKABLE(name, start);
#define __EXC_REAL_OOL_HV_DIRECT(name, start, end, handler) \
EXC_REAL_BEGIN(name, start, end); \
__OOL_EXCEPTION(start, label, handler); \
EXC_REAL_END(name, start, end);
#define __EXC_REAL_OOL_HV(name, start, end) \
__EXC_REAL_OOL(name, start, end);
#define __TRAMP_REAL_REAL_OOL_HV(name, vec) \
TRAMP_REAL_BEGIN(tramp_real_##name); \
STD_EXCEPTION_HV_OOL(vec, name##_common); \
#define EXC_REAL_OOL_HV(name, start, end) \
__EXC_REAL_OOL_HV(name, start, end); \
__TRAMP_REAL_REAL_OOL_HV(name, start);
#define __EXC_REAL_OOL_MASKABLE_HV(name, start, end) \
__EXC_REAL_OOL(name, start, end);
#define __TRAMP_REAL_REAL_OOL_MASKABLE_HV(name, vec) \
TRAMP_REAL_BEGIN(tramp_real_##name); \
MASKABLE_EXCEPTION_HV_OOL(vec, name##_common); \
#define EXC_REAL_OOL_MASKABLE_HV(name, start, end) \
__EXC_REAL_OOL_MASKABLE_HV(name, start, end); \
__TRAMP_REAL_REAL_OOL_MASKABLE_HV(name, start);
#define __EXC_VIRT_OOL(name, start, end) \
EXC_VIRT_BEGIN(name, start, end); \
__OOL_EXCEPTION(start, label, tramp_virt_##name); \
EXC_VIRT_END(name, start, end);
#define __TRAMP_REAL_VIRT_OOL(name, realvec) \
TRAMP_VIRT_BEGIN(tramp_virt_##name); \
STD_RELON_EXCEPTION_PSERIES_OOL(realvec, name##_common); \
#define EXC_VIRT_OOL(name, start, end, realvec) \
__EXC_VIRT_OOL(name, start, end); \
__TRAMP_REAL_VIRT_OOL(name, realvec);
#define __EXC_VIRT_OOL_MASKABLE(name, start, end) \
__EXC_VIRT_OOL(name, start, end);
#define __TRAMP_REAL_VIRT_OOL_MASKABLE(name, realvec) \
TRAMP_VIRT_BEGIN(tramp_virt_##name); \
MASKABLE_RELON_EXCEPTION_PSERIES_OOL(realvec, name##_common); \
#define EXC_VIRT_OOL_MASKABLE(name, start, end, realvec) \
__EXC_VIRT_OOL_MASKABLE(name, start, end); \
__TRAMP_REAL_VIRT_OOL_MASKABLE(name, realvec);
#define __EXC_VIRT_OOL_HV(name, start, end) \
__EXC_VIRT_OOL(name, start, end);
#define __TRAMP_REAL_VIRT_OOL_HV(name, realvec) \
TRAMP_VIRT_BEGIN(tramp_virt_##name); \
STD_RELON_EXCEPTION_HV_OOL(realvec, name##_common); \
#define EXC_VIRT_OOL_HV(name, start, end, realvec) \
__EXC_VIRT_OOL_HV(name, start, end); \
__TRAMP_REAL_VIRT_OOL_HV(name, realvec);
#define __EXC_VIRT_OOL_MASKABLE_HV(name, start, end) \
__EXC_VIRT_OOL(name, start, end);
#define __TRAMP_REAL_VIRT_OOL_MASKABLE_HV(name, realvec) \
TRAMP_VIRT_BEGIN(tramp_virt_##name); \
MASKABLE_RELON_EXCEPTION_HV_OOL(realvec, name##_common); \
#define EXC_VIRT_OOL_MASKABLE_HV(name, start, end, realvec) \
__EXC_VIRT_OOL_MASKABLE_HV(name, start, end); \
__TRAMP_REAL_VIRT_OOL_MASKABLE_HV(name, realvec);
#define TRAMP_KVM(area, n) \
TRAMP_KVM_BEGIN(do_kvm_##n); \
KVM_HANDLER(area, EXC_STD, n); \
#define TRAMP_KVM_SKIP(area, n) \
TRAMP_KVM_BEGIN(do_kvm_##n); \
KVM_HANDLER_SKIP(area, EXC_STD, n); \
/*
* HV variant exceptions get the 0x2 bit added to their trap number.
*/
#define TRAMP_KVM_HV(area, n) \
TRAMP_KVM_BEGIN(do_kvm_H##n); \
KVM_HANDLER(area, EXC_HV, n + 0x2); \
#define TRAMP_KVM_HV_SKIP(area, n) \
TRAMP_KVM_BEGIN(do_kvm_H##n); \
KVM_HANDLER_SKIP(area, EXC_HV, n + 0x2); \
#define EXC_COMMON(name, realvec, hdlr) \
EXC_COMMON_BEGIN(name); \
STD_EXCEPTION_COMMON(realvec, name, hdlr); \
#define EXC_COMMON_ASYNC(name, realvec, hdlr) \
EXC_COMMON_BEGIN(name); \
STD_EXCEPTION_COMMON_ASYNC(realvec, name, hdlr); \
#define EXC_COMMON_HV(name, realvec, hdlr) \
EXC_COMMON_BEGIN(name); \
STD_EXCEPTION_COMMON(realvec + 0x2, name, hdlr); \
#endif /* _ASM_POWERPC_HEAD_64_H */

2
arch/powerpc/include/asm/machdep.h
View file

@ -61,7 +61,7 @@ struct machdep_calls {
void (*init_IRQ)(void);
/* Return an irq, or NO_IRQ to indicate there are none pending. */
/* Return an irq, or 0 to indicate there are none pending. */
unsigned int (*get_irq)(void);
/* PCI stuff */

3
arch/powerpc/include/asm/mmu-book3e.h
View file

@ -313,6 +313,9 @@ extern int book3e_htw_mode;
* return 1, indicating that the tlb requires preloading.
*/
#define HUGETLB_NEED_PRELOAD
#define mmu_cleanup_all NULL
#endif
#endif /* !__ASSEMBLY__ */

4
arch/powerpc/include/asm/mmu.h
View file

@ -204,6 +204,10 @@ extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup;
* make it match the size our of bolted TLB area
*/
extern u64 ppc64_rma_size;
/* Cleanup function used by kexec */
extern void mmu_cleanup_all(void);
extern void radix__mmu_cleanup_all(void);
#endif /* CONFIG_PPC64 */
struct mm_struct;

4
arch/powerpc/include/asm/mmu_context.h
View file

@ -18,6 +18,7 @@ extern void destroy_context(struct mm_struct *mm);
#ifdef CONFIG_SPAPR_TCE_IOMMU
struct mm_iommu_table_group_mem_t;
extern int isolate_lru_page(struct page *page); /* from internal.h */
extern bool mm_iommu_preregistered(void);
extern long mm_iommu_get(unsigned long ua, unsigned long entries,
struct mm_iommu_table_group_mem_t **pmem);
@ -71,7 +72,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
{
/* Mark this context has been used on the new CPU */
cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
if (!cpumask_test_cpu(smp_processor_id(), mm_cpumask(next)))
cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
/* 32-bit keeps track of the current PGDIR in the thread struct */
#ifdef CONFIG_PPC32

6
arch/powerpc/include/asm/mpic_msgr.h
View file

@ -122,9 +122,9 @@ static inline void mpic_msgr_set_destination(struct mpic_msgr *msgr,
* @msgr: the message register whose IRQ is to be returned
*
* Returns the IRQ number associated with the given message register.
* NO_IRQ is returned if this message register is not capable of
* receiving interrupts. What message register can and cannot receive
* interrupts is specified in the device tree for the system.
* 0 is returned if this message register is not capable of receiving
* interrupts. What message register can and cannot receive interrupts is
* specified in the device tree for the system.
*/
static inline int mpic_msgr_get_irq(struct mpic_msgr *msgr)
{

3
arch/powerpc/include/asm/nohash/32/pgtable.h
View file

@ -267,7 +267,8 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
}
static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry)
static inline void __ptep_set_access_flags(struct mm_struct *mm,
pte_t *ptep, pte_t entry)
{
unsigned long set = pte_val(entry) &
(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);

3
arch/powerpc/include/asm/nohash/64/pgtable.h
View file

@ -300,7 +300,8 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
/* Set the dirty and/or accessed bits atomically in a linux PTE, this
* function doesn't need to flush the hash entry
*/
static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry)
static inline void __ptep_set_access_flags(struct mm_struct *mm,
pte_t *ptep, pte_t entry)
{
unsigned long bits = pte_val(entry) &
(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);

2
arch/powerpc/include/asm/parport.h
View file

@ -28,7 +28,7 @@ static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
io1 = prop[1]; io2 = prop[2];
virq = irq_of_parse_and_map(np, 0);
if (virq == NO_IRQ)
if (!virq)
continue;
if (parport_pc_probe_port(io1, io2, virq, autodma, NULL, 0)

4
arch/powerpc/include/asm/pnv-pci.h
View file

@ -16,7 +16,7 @@
#include <misc/cxl-base.h>
#include <asm/opal-api.h>
#define PCI_SLOT_ID_PREFIX 0x8000000000000000
#define PCI_SLOT_ID_PREFIX (1UL << 63)
#define PCI_SLOT_ID(phb_id, bdfn) \
(PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id))
@ -63,6 +63,8 @@ struct pnv_php_slot {
#define PNV_PHP_STATE_POPULATED 2
#define PNV_PHP_STATE_OFFLINE 3
int state;
int irq;
struct workqueue_struct *wq;
struct device_node *dn;
struct pci_dev *pdev;
struct pci_bus *bus;

2
arch/powerpc/include/asm/ppc-opcode.h
View file

@ -236,6 +236,7 @@
#define PPC_INST_STWU 0x94000000
#define PPC_INST_MFLR 0x7c0802a6
#define PPC_INST_MTLR 0x7c0803a6
#define PPC_INST_MTCTR 0x7c0903a6
#define PPC_INST_CMPWI 0x2c000000
#define PPC_INST_CMPDI 0x2c200000
#define PPC_INST_CMPW 0x7c000000
@ -250,6 +251,7 @@
#define PPC_INST_SUB 0x7c000050
#define PPC_INST_BLR 0x4e800020
#define PPC_INST_BLRL 0x4e800021
#define PPC_INST_BCTR 0x4e800420
#define PPC_INST_MULLD 0x7c0001d2
#define PPC_INST_MULLW 0x7c0001d6
#define PPC_INST_MULHWU 0x7c000016

49
arch/powerpc/include/asm/ppc_asm.h
View file

@ -201,14 +201,12 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
#ifdef PPC64_ELF_ABI_v2
#define _GLOBAL(name) \
.section ".text"; \
.align 2 ; \
.type name,@function; \
.globl name; \
name:
#define _GLOBAL_TOC(name) \
.section ".text"; \
.align 2 ; \
.type name,@function; \
.globl name; \
@ -217,13 +215,6 @@ name: \
addi r2,r2,(.TOC.-0b)@l; \
.localentry name,.-name
#define _KPROBE(name) \
.section ".kprobes.text","a"; \
.align 2 ; \
.type name,@function; \
.globl name; \
name:
#define DOTSYM(a) a
#else
@ -232,35 +223,20 @@ name: \
#define GLUE(a,b) XGLUE(a,b)
#define _GLOBAL(name) \
.section ".text"; \
.align 2 ; \
.globl name; \
.globl GLUE(.,name); \
.section ".opd","aw"; \
.pushsection ".opd","aw"; \
name: \
.quad GLUE(.,name); \
.quad .TOC.@tocbase; \
.quad 0; \
.previous; \
.popsection; \
.type GLUE(.,name),@function; \
GLUE(.,name):
#define _GLOBAL_TOC(name) _GLOBAL(name)
#define _KPROBE(name) \
.section ".kprobes.text","a"; \
.align 2 ; \
.globl name; \
.globl GLUE(.,name); \
.section ".opd","aw"; \
name: \
.quad GLUE(.,name); \
.quad .TOC.@tocbase; \
.quad 0; \
.previous; \
.type GLUE(.,name),@function; \
GLUE(.,name):
#define DOTSYM(a) GLUE(.,a)
#endif
@ -272,20 +248,28 @@ GLUE(.,name):
n:
#define _GLOBAL(n) \
.text; \
.stabs __stringify(n:F-1),N_FUN,0,0,n;\
.globl n; \
n:
#define _GLOBAL_TOC(name) _GLOBAL(name)
#define _KPROBE(n) \
.section ".kprobes.text","a"; \
.globl n; \
n:
#endif
/*
* __kprobes (the C annotation) puts the symbol into the .kprobes.text
* section, which gets emitted at the end of regular text.
*
* _ASM_NOKPROBE_SYMBOL and NOKPROBE_SYMBOL just adds the symbol to
* a blacklist. The former is for core kprobe functions/data, the
* latter is for those that incdentially must be excluded from probing
* and allows them to be linked at more optimal location within text.
*/
#define _ASM_NOKPROBE_SYMBOL(entry) \
.pushsection "_kprobe_blacklist","aw"; \
PPC_LONG (entry) ; \
.popsection
#define FUNC_START(name) _GLOBAL(name)
#define FUNC_END(name)
@ -527,7 +511,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_601)
#endif
#define MTMSRD(r) mtmsr r
#define MTMSR_EERI(reg) mtmsr reg
#define CLR_TOP32(r)
#endif
#endif /* __KERNEL__ */

16
arch/powerpc/include/asm/processor.h
View file

@ -147,7 +147,7 @@ typedef struct {
} mm_segment_t;
#define TS_FPR(i) fp_state.fpr[i][TS_FPROFFSET]
#define TS_TRANS_FPR(i) transact_fp.fpr[i][TS_FPROFFSET]
#define TS_CKFPR(i) ckfp_state.fpr[i][TS_FPROFFSET]
/* FP and VSX 0-31 register set */
struct thread_fp_state {
@ -257,6 +257,7 @@ struct thread_struct {
int used_spe; /* set if process has used spe */
#endif /* CONFIG_SPE */
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
u8 load_tm;
u64 tm_tfhar; /* Transaction fail handler addr */
u64 tm_texasr; /* Transaction exception & summary */
u64 tm_tfiar; /* Transaction fail instr address reg */
@ -267,20 +268,17 @@ struct thread_struct {
unsigned long tm_dscr;
/*
* Transactional FP and VSX 0-31 register set.
* NOTE: the sense of these is the opposite of the integer ckpt_regs!
* Checkpointed FP and VSX 0-31 register set.
*
* When a transaction is active/signalled/scheduled etc., *regs is the
* most recent set of/speculated GPRs with ckpt_regs being the older
* checkpointed regs to which we roll back if transaction aborts.
*
* However, fpr[] is the checkpointed 'base state' of FP regs, and
* transact_fpr[] is the new set of transactional values.
* VRs work the same way.
* These are analogous to how ckpt_regs and pt_regs work
*/
struct thread_fp_state transact_fp;
struct thread_vr_state transact_vr;
unsigned long transact_vrsave;
struct thread_fp_state ckfp_state; /* Checkpointed FP state */
struct thread_vr_state ckvr_state; /* Checkpointed VR state */
unsigned long ckvrsave; /* Checkpointed VRSAVE */
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
void* kvm_shadow_vcpu; /* KVM internal data */

5
arch/powerpc/include/asm/reg.h
View file

@ -475,6 +475,9 @@
#define HID0_POWER8_1TO4LPAR __MASK(51)
#define HID0_POWER8_DYNLPARDIS __MASK(48)
/* POWER9 HID0 bits */
#define HID0_POWER9_RADIX __MASK(63 - 8)
#define SPRN_HID1 0x3F1 /* Hardware Implementation Register 1 */
#ifdef CONFIG_6xx
#define HID1_EMCP (1<<31) /* 7450 Machine Check Pin Enable */
@ -1248,7 +1251,7 @@ static inline void mtmsr_isync(unsigned long val)
: "memory")
#endif
extern void msr_check_and_set(unsigned long bits);
extern unsigned long msr_check_and_set(unsigned long bits);
extern bool strict_msr_control;
extern void __msr_check_and_clear(unsigned long bits);
static inline void msr_check_and_clear(unsigned long bits)

2
arch/powerpc/include/asm/signal.h
View file

@ -5,6 +5,4 @@
#include <uapi/asm/signal.h>
#include <uapi/asm/ptrace.h>
extern unsigned long get_tm_stackpointer(struct pt_regs *regs);
#endif /* _ASM_POWERPC_SIGNAL_H */

5
arch/powerpc/include/asm/tm.h
View file

@ -9,11 +9,6 @@
#ifndef __ASSEMBLY__
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
extern void do_load_up_transact_fpu(struct thread_struct *thread);
extern void do_load_up_transact_altivec(struct thread_struct *thread);
#endif
extern void tm_enable(void);
extern void tm_reclaim(struct thread_struct *thread,
unsigned long orig_msr, uint8_t cause);

15
arch/powerpc/kernel/Makefile
View file

@ -31,8 +31,7 @@ obj-y := cputable.o ptrace.o syscalls.o \
process.o systbl.o idle.o \
signal.o sysfs.o cacheinfo.o time.o \
prom.o traps.o setup-common.o \
udbg.o misc.o io.o dma.o \
misc_$(CONFIG_WORD_SIZE).o \
udbg.o misc.o io.o dma.o misc_$(BITS).o \
of_platform.o prom_parse.o
obj-$(CONFIG_PPC64) += setup_64.o sys_ppc32.o \
signal_64.o ptrace32.o \
@ -70,23 +69,23 @@ obj-$(CONFIG_HIBERNATION) += swsusp.o suspend.o
ifeq ($(CONFIG_FSL_BOOKE),y)
obj-$(CONFIG_HIBERNATION) += swsusp_booke.o
else
obj-$(CONFIG_HIBERNATION) += swsusp_$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_HIBERNATION) += swsusp_$(BITS).o
endif
obj64-$(CONFIG_HIBERNATION) += swsusp_asm64.o
obj-$(CONFIG_MODULES) += module.o module_$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_MODULES) += module.o module_$(BITS).o
obj-$(CONFIG_44x) += cpu_setup_44x.o
obj-$(CONFIG_PPC_FSL_BOOK3E) += cpu_setup_fsl_booke.o
obj-$(CONFIG_PPC_DOORBELL) += dbell.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o
extra-y := head_$(CONFIG_WORD_SIZE).o
extra-y := head_$(BITS).o
extra-$(CONFIG_40x) := head_40x.o
extra-$(CONFIG_44x) := head_44x.o
extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
extra-$(CONFIG_8xx) := head_8xx.o
extra-y += vmlinux.lds
obj-$(CONFIG_RELOCATABLE) += reloc_$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_RELOCATABLE) += reloc_$(BITS).o
obj-$(CONFIG_PPC32) += entry_32.o setup_32.o
obj-$(CONFIG_PPC64) += dma-iommu.o iommu.o
@ -104,11 +103,11 @@ obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_SWIOTLB) += dma-swiotlb.o
pci64-$(CONFIG_PPC64) += pci_dn.o pci-hotplug.o isa-bridge.o
obj-$(CONFIG_PCI) += pci_$(CONFIG_WORD_SIZE).o $(pci64-y) \
obj-$(CONFIG_PCI) += pci_$(BITS).o $(pci64-y) \
pci-common.o pci_of_scan.o
obj-$(CONFIG_PCI_MSI) += msi.o
obj-$(CONFIG_KEXEC) += machine_kexec.o crash.o \
machine_kexec_$(CONFIG_WORD_SIZE).o
machine_kexec_$(BITS).o
obj-$(CONFIG_AUDIT) += audit.o
obj64-$(CONFIG_AUDIT) += compat_audit.o

12
arch/powerpc/kernel/asm-offsets.c
View file

@ -142,12 +142,12 @@ int main(void)
DEFINE(THREAD_TM_PPR, offsetof(struct thread_struct, tm_ppr));
DEFINE(THREAD_TM_DSCR, offsetof(struct thread_struct, tm_dscr));
DEFINE(PT_CKPT_REGS, offsetof(struct thread_struct, ckpt_regs));
DEFINE(THREAD_TRANSACT_VRSTATE, offsetof(struct thread_struct,
transact_vr));
DEFINE(THREAD_TRANSACT_VRSAVE, offsetof(struct thread_struct,
transact_vrsave));
DEFINE(THREAD_TRANSACT_FPSTATE, offsetof(struct thread_struct,
transact_fp));
DEFINE(THREAD_CKVRSTATE, offsetof(struct thread_struct,
ckvr_state));
DEFINE(THREAD_CKVRSAVE, offsetof(struct thread_struct,
ckvrsave));
DEFINE(THREAD_CKFPSTATE, offsetof(struct thread_struct,
ckfp_state));
/* Local pt_regs on stack for Transactional Memory funcs. */
DEFINE(TM_FRAME_SIZE, STACK_FRAME_OVERHEAD +
sizeof(struct pt_regs) + 16);

19
arch/powerpc/kernel/cputable.c
View file

@ -506,6 +506,25 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check_early = __machine_check_early_realmode_p8,
.platform = "power8",
},
{ /* Power9 DD1*/
.pvr_mask = 0xffffff00,
.pvr_value = 0x004e0100,
.cpu_name = "POWER9 (raw)",
.cpu_features = CPU_FTRS_POWER9_DD1,
.cpu_user_features = COMMON_USER_POWER9,
.cpu_user_features2 = COMMON_USER2_POWER9,
.mmu_features = MMU_FTRS_POWER9,
.icache_bsize = 128,
.dcache_bsize = 128,
.num_pmcs = 6,
.pmc_type = PPC_PMC_IBM,
.oprofile_cpu_type = "ppc64/power9",
.oprofile_type = PPC_OPROFILE_INVALID,
.cpu_setup = __setup_cpu_power9,
.cpu_restore = __restore_cpu_power9,
.flush_tlb = __flush_tlb_power9,
.platform = "power9",
},
{ /* Power9 */
.pvr_mask = 0xffff0000,
.pvr_value = 0x004e0000,

4
arch/powerpc/kernel/eeh.c
View file

@ -116,6 +116,7 @@ struct eeh_ops *eeh_ops = NULL;
/* Lock to avoid races due to multiple reports of an error */
DEFINE_RAW_SPINLOCK(confirm_error_lock);
EXPORT_SYMBOL_GPL(confirm_error_lock);
/* Lock to protect passed flags */
static DEFINE_MUTEX(eeh_dev_mutex);
@ -1044,7 +1045,7 @@ int eeh_init(void)
if (eeh_enabled())
pr_info("EEH: PCI Enhanced I/O Error Handling Enabled\n");
else
pr_warn("EEH: No capable adapters found\n");
pr_info("EEH: No capable adapters found\n");
return ret;
}
@ -1502,6 +1503,7 @@ int eeh_pe_set_option(struct eeh_pe *pe, int option)
break;
case EEH_OPT_THAW_MMIO:
case EEH_OPT_THAW_DMA:
case EEH_OPT_FREEZE_PE:
if (!eeh_ops || !eeh_ops->set_option) {
ret = -ENOENT;
break;

10
arch/powerpc/kernel/eeh_driver.c
View file

@ -993,9 +993,17 @@ static void eeh_handle_special_event(void)
/* Notify all devices to be down */
eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
bus = eeh_pe_bus_get(phb_pe);
eeh_pe_dev_traverse(pe,
eeh_report_failure, NULL);
bus = eeh_pe_bus_get(phb_pe);
if (!bus) {
pr_err("%s: Cannot find PCI bus for "
"PHB#%d-PE#%x\n",
__func__,
pe->phb->global_number,
pe->addr);
break;
}
pci_hp_remove_devices(bus);
}
pci_unlock_rescan_remove();

1
arch/powerpc/kernel/eeh_pe.c
View file

@ -581,6 +581,7 @@ void eeh_pe_state_mark(struct eeh_pe *pe, int state)
{
eeh_pe_traverse(pe, __eeh_pe_state_mark, &state);
}
EXPORT_SYMBOL_GPL(eeh_pe_state_mark);
static void *__eeh_pe_dev_mode_mark(void *data, void *flag)
{

1
arch/powerpc/kernel/entry_32.S
View file

@ -654,7 +654,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_SPE)
#endif /* CONFIG_SMP */
tophys(r0,r4)
CLR_TOP32(r0)
mtspr SPRN_SPRG_THREAD,r0 /* Update current THREAD phys addr */
lwz r1,KSP(r4) /* Load new stack pointer */

21
arch/powerpc/kernel/entry_64.S
View file

@ -139,7 +139,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
#ifdef CONFIG_PPC_BOOK3E
wrteei 1
#else
ld r11,PACAKMSR(r13)
li r11,MSR_RI
ori r11,r11,MSR_EE
mtmsrd r11,1
#endif /* CONFIG_PPC_BOOK3E */
@ -195,7 +195,6 @@ system_call: /* label this so stack traces look sane */
#ifdef CONFIG_PPC_BOOK3E
wrteei 0
#else
ld r10,PACAKMSR(r13)
/*
* For performance reasons we clear RI the same time that we
* clear EE. We only need to clear RI just before we restore r13
@ -203,8 +202,7 @@ system_call: /* label this so stack traces look sane */
* We have to be careful to restore RI if we branch anywhere from
* here (eg syscall_exit_work).
*/
li r9,MSR_RI
andc r11,r10,r9
li r11,0
mtmsrd r11,1
#endif /* CONFIG_PPC_BOOK3E */
@ -221,13 +219,12 @@ system_call: /* label this so stack traces look sane */
#endif
2: addi r3,r1,STACK_FRAME_OVERHEAD
#ifdef CONFIG_PPC_BOOK3S
li r10,MSR_RI
mtmsrd r10,1 /* Restore RI */
#endif
bl restore_math
#ifdef CONFIG_PPC_BOOK3S
ld r10,PACAKMSR(r13)
li r9,MSR_RI
andc r11,r10,r9 /* Re-clear RI */
li r11,0
mtmsrd r11,1
#endif
ld r8,_MSR(r1)
@ -308,6 +305,7 @@ syscall_enosys:
syscall_exit_work:
#ifdef CONFIG_PPC_BOOK3S
li r10,MSR_RI
mtmsrd r10,1 /* Restore RI */
#endif
/* If TIF_RESTOREALL is set, don't scribble on either r3 or ccr.
@ -354,7 +352,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
#ifdef CONFIG_PPC_BOOK3E
wrteei 1
#else
ld r10,PACAKMSR(r13)
li r10,MSR_RI
ori r10,r10,MSR_EE
mtmsrd r10,1
#endif /* CONFIG_PPC_BOOK3E */
@ -619,7 +617,7 @@ _GLOBAL(ret_from_except_lite)
#ifdef CONFIG_PPC_BOOK3E
wrteei 0
#else
ld r10,PACAKMSR(r13) /* Get kernel MSR without EE */
li r10,MSR_RI
mtmsrd r10,1 /* Update machine state */
#endif /* CONFIG_PPC_BOOK3E */
@ -751,7 +749,7 @@ resume_kernel:
#ifdef CONFIG_PPC_BOOK3E
wrteei 0
#else
ld r10,PACAKMSR(r13) /* Get kernel MSR without EE */
li r10,MSR_RI
mtmsrd r10,1 /* Update machine state */
#endif /* CONFIG_PPC_BOOK3E */
#endif /* CONFIG_PREEMPT */
@ -841,8 +839,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
* userspace and we take an exception after restoring r13,
* we end up corrupting the userspace r13 value.
*/
ld r4,PACAKMSR(r13) /* Get kernel MSR without EE */
andc r4,r4,r0 /* r0 contains MSR_RI here */
li r4,0
mtmsrd r4,1
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM

2024
arch/powerpc/kernel/exceptions-64s.S
View file

File diff suppressed because it is too large Load diff

8
arch/powerpc/kernel/fadump.c
View file

@ -778,7 +778,11 @@ static int fadump_init_elfcore_header(char *bufp)
elf->e_entry = 0;
elf->e_phoff = sizeof(struct elfhdr);
elf->e_shoff = 0;
elf->e_flags = ELF_CORE_EFLAGS;
#if defined(_CALL_ELF)
elf->e_flags = _CALL_ELF;
#else
elf->e_flags = 0;
#endif
elf->e_ehsize = sizeof(struct elfhdr);
elf->e_phentsize = sizeof(struct elf_phdr);
elf->e_phnum = 0;
@ -1104,7 +1108,9 @@ static ssize_t fadump_release_memory_store(struct kobject *kobj,
* Take away the '/proc/vmcore'. We are releasing the dump
* memory, hence it will not be valid anymore.
*/
#ifdef CONFIG_PROC_VMCORE
vmcore_cleanup();
#endif
fadump_invalidate_release_mem();
} else

26
arch/powerpc/kernel/fpu.S
View file

@ -50,32 +50,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX); \
#define REST_32FPVSRS(n,c,base) __REST_32FPVSRS(n,__REG_##c,__REG_##base)
#define SAVE_32FPVSRS(n,c,base) __SAVE_32FPVSRS(n,__REG_##c,__REG_##base)
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/* void do_load_up_transact_fpu(struct thread_struct *thread)
*
* This is similar to load_up_fpu but for the transactional version of the FP
* register set. It doesn't mess with the task MSR or valid flags.
* Furthermore, we don't do lazy FP with TM currently.
*/
_GLOBAL(do_load_up_transact_fpu)
mfmsr r6
ori r5,r6,MSR_FP
#ifdef CONFIG_VSX
BEGIN_FTR_SECTION
oris r5,r5,MSR_VSX@h
END_FTR_SECTION_IFSET(CPU_FTR_VSX)
#endif
SYNC
MTMSRD(r5)
addi r7,r3,THREAD_TRANSACT_FPSTATE
lfd fr0,FPSTATE_FPSCR(r7)
MTFSF_L(fr0)
REST_32FPVSRS(0, R4, R7)
blr
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
/*
* Load state from memory into FP registers including FPSCR.
* Assumes the caller has enabled FP in the MSR.

3
arch/powerpc/kernel/head_32.S
View file

@ -266,7 +266,6 @@ __secondary_hold_acknowledge:
#define EXCEPTION_PROLOG_2 \
CLR_TOP32(r11); \
stw r10,_CCR(r11); /* save registers */ \
stw r12,GPR12(r11); \
stw r9,GPR9(r11); \
@ -862,7 +861,6 @@ __secondary_start:
/* ptr to phys current thread */
tophys(r4,r2)
addi r4,r4,THREAD /* phys address of our thread_struct */
CLR_TOP32(r4)
mtspr SPRN_SPRG_THREAD,r4
li r3,0
mtspr SPRN_SPRG_RTAS,r3 /* 0 => not in RTAS */
@ -949,7 +947,6 @@ start_here:
/* ptr to phys current thread */
tophys(r4,r2)
addi r4,r4,THREAD /* init task's THREAD */
CLR_TOP32(r4)
mtspr SPRN_SPRG_THREAD,r4
li r3,0
mtspr SPRN_SPRG_RTAS,r3 /* 0 => not in RTAS */

53
arch/powerpc/kernel/head_64.S
View file

@ -28,6 +28,7 @@
#include <asm/page.h>
#include <asm/mmu.h>
#include <asm/ppc_asm.h>
#include <asm/head-64.h>
#include <asm/asm-offsets.h>
#include <asm/bug.h>
#include <asm/cputable.h>
@ -65,9 +66,14 @@
* 2. The kernel is entered at __start
*/
.text
.globl _stext
_stext:
OPEN_FIXED_SECTION(first_256B, 0x0, 0x100)
USE_FIXED_SECTION(first_256B)
/*
* Offsets are relative from the start of fixed section, and
* first_256B starts at 0. Offsets are a bit easier to use here
* than the fixed section entry macros.
*/
. = 0x0
_GLOBAL(__start)
/* NOP this out unconditionally */
BEGIN_FTR_SECTION
@ -104,6 +110,7 @@ __secondary_hold_acknowledge:
. = 0x5c
.globl __run_at_load
__run_at_load:
DEFINE_FIXED_SYMBOL(__run_at_load)
.long 0x72756e30 /* "run0" -- relocate to 0 by default */
#endif
@ -133,7 +140,7 @@ __secondary_hold:
/* Tell the master cpu we're here */
/* Relocation is off & we are located at an address less */
/* than 0x100, so only need to grab low order offset. */
std r24,__secondary_hold_acknowledge-_stext(0)
std r24,(ABS_ADDR(__secondary_hold_acknowledge))(0)
sync
li r26,0
@ -141,7 +148,7 @@ __secondary_hold:
tovirt(r26,r26)
#endif
/* All secondary cpus wait here until told to start. */
100: ld r12,__secondary_hold_spinloop-_stext(r26)
100: ld r12,(ABS_ADDR(__secondary_hold_spinloop))(r26)
cmpdi 0,r12,0
beq 100b
@ -166,12 +173,13 @@ __secondary_hold:
#else
BUG_OPCODE
#endif
CLOSE_FIXED_SECTION(first_256B)
/* This value is used to mark exception frames on the stack. */
.section ".toc","aw"
exception_marker:
.tc ID_72656773_68657265[TC],0x7265677368657265
.text
.previous
/*
* On server, we include the exception vectors code here as it
@ -180,8 +188,12 @@ exception_marker:
*/
#ifdef CONFIG_PPC_BOOK3S
#include "exceptions-64s.S"
#else
OPEN_TEXT_SECTION(0x100)
#endif
USE_TEXT_SECTION()
#ifdef CONFIG_PPC_BOOK3E
/*
* The booting_thread_hwid holds the thread id we want to boot in cpu
@ -558,7 +570,7 @@ __after_prom_start:
#if defined(CONFIG_PPC_BOOK3E)
tovirt(r26,r26) /* on booke, we already run at PAGE_OFFSET */
#endif
lwz r7,__run_at_load-_stext(r26)
lwz r7,(FIXED_SYMBOL_ABS_ADDR(__run_at_load))(r26)
#if defined(CONFIG_PPC_BOOK3E)
tophys(r26,r26)
#endif
@ -601,7 +613,7 @@ __after_prom_start:
#if defined(CONFIG_PPC_BOOK3E)
tovirt(r26,r26) /* on booke, we already run at PAGE_OFFSET */
#endif
lwz r7,__run_at_load-_stext(r26)
lwz r7,(FIXED_SYMBOL_ABS_ADDR(__run_at_load))(r26)
cmplwi cr0,r7,1
bne 3f
@ -611,28 +623,35 @@ __after_prom_start:
sub r5,r5,r11
#else
/* just copy interrupts */
LOAD_REG_IMMEDIATE(r5, __end_interrupts - _stext)
LOAD_REG_IMMEDIATE(r5, FIXED_SYMBOL_ABS_ADDR(__end_interrupts))
#endif
b 5f
3:
#endif
lis r5,(copy_to_here - _stext)@ha
addi r5,r5,(copy_to_here - _stext)@l /* # bytes of memory to copy */
/* # bytes of memory to copy */
lis r5,(ABS_ADDR(copy_to_here))@ha
addi r5,r5,(ABS_ADDR(copy_to_here))@l
bl copy_and_flush /* copy the first n bytes */
/* this includes the code being */
/* executed here. */
addis r8,r3,(4f - _stext)@ha /* Jump to the copy of this code */
addi r12,r8,(4f - _stext)@l /* that we just made */
/* Jump to the copy of this code that we just made */
addis r8,r3,(ABS_ADDR(4f))@ha
addi r12,r8,(ABS_ADDR(4f))@l
mtctr r12
bctr
.balign 8
p_end: .llong _end - _stext
p_end: .llong _end - copy_to_here
4: /* Now copy the rest of the kernel up to _end */
addis r5,r26,(p_end - _stext)@ha
ld r5,(p_end - _stext)@l(r5) /* get _end */
4:
/*
* Now copy the rest of the kernel up to _end, add
* _end - copy_to_here to the copy limit and run again.
*/
addis r8,r26,(ABS_ADDR(p_end))@ha
ld r8,(ABS_ADDR(p_end))@l(r8)
add r5,r5,r8
5: bl copy_and_flush /* copy the rest */
9: b start_here_multiplatform

1
arch/powerpc/kernel/head_8xx.S
View file

@ -151,7 +151,6 @@ turn_on_mmu:
#define EXCEPTION_PROLOG_2 \
CLR_TOP32(r11); \
stw r10,_CCR(r11); /* save registers */ \
stw r12,GPR12(r11); \
stw r9,GPR9(r11); \

9
arch/powerpc/kernel/hw_breakpoint.c
View file

@ -206,7 +206,7 @@ void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs)
/*
* Handle debug exception notifications.
*/
int __kprobes hw_breakpoint_handler(struct die_args *args)
int hw_breakpoint_handler(struct die_args *args)
{
int rc = NOTIFY_STOP;
struct perf_event *bp;
@ -290,11 +290,12 @@ int __kprobes hw_breakpoint_handler(struct die_args *args)
rcu_read_unlock();
return rc;
}
NOKPROBE_SYMBOL(hw_breakpoint_handler);
/*
* Handle single-step exceptions following a DABR hit.
*/
static int __kprobes single_step_dabr_instruction(struct die_args *args)
static int single_step_dabr_instruction(struct die_args *args)
{
struct pt_regs *regs = args->regs;
struct perf_event *bp = NULL;
@ -329,11 +330,12 @@ static int __kprobes single_step_dabr_instruction(struct die_args *args)
return NOTIFY_STOP;
}
NOKPROBE_SYMBOL(single_step_dabr_instruction);
/*
* Handle debug exception notifications.
*/
int __kprobes hw_breakpoint_exceptions_notify(
int hw_breakpoint_exceptions_notify(
struct notifier_block *unused, unsigned long val, void *data)
{
int ret = NOTIFY_DONE;
@ -349,6 +351,7 @@ int __kprobes hw_breakpoint_exceptions_notify(
return ret;
}
NOKPROBE_SYMBOL(hw_breakpoint_exceptions_notify);
/*
* Release the user breakpoints used by ptrace

2
arch/powerpc/kernel/ibmebus.c
View file

@ -227,7 +227,7 @@ int ibmebus_request_irq(u32 ist, irq_handler_t handler,
{
unsigned int irq = irq_create_mapping(NULL, ist);
if (irq == NO_IRQ)
if (!irq)
return -EINVAL;
return request_irq(irq, handler, irq_flags, devname, dev_id);

17
arch/powerpc/kernel/irq.c
View file

@ -67,6 +67,7 @@
#include <asm/smp.h>
#include <asm/debug.h>
#include <asm/livepatch.h>
#include <asm/asm-prototypes.h>
#ifdef CONFIG_PPC64
#include <asm/paca.h>
@ -155,6 +156,15 @@ notrace unsigned int __check_irq_replay(void)
lv1_get_version_info(&tmp, &tmp2);
}
/*
* Check if an hypervisor Maintenance interrupt happened.
* This is a higher priority interrupt than the others, so
* replay it first.
*/
local_paca->irq_happened &= ~PACA_IRQ_HMI;
if (happened & PACA_IRQ_HMI)
return 0xe60;
/*
* We may have missed a decrementer interrupt. We check the
* decrementer itself rather than the paca irq_happened field
@ -190,11 +200,6 @@ notrace unsigned int __check_irq_replay(void)
}
#endif /* CONFIG_PPC_BOOK3E */
/* Check if an hypervisor Maintenance interrupt happened */
local_paca->irq_happened &= ~PACA_IRQ_HMI;
if (happened & PACA_IRQ_HMI)
return 0xe60;
/* There should be nothing left ! */
BUG_ON(local_paca->irq_happened != 0);
@ -514,7 +519,7 @@ void __do_irq(struct pt_regs *regs)
may_hard_irq_enable();
/* And finally process it */
if (unlikely(irq == NO_IRQ))
if (unlikely(!irq))
__this_cpu_inc(irq_stat.spurious_irqs);
else
generic_handle_irq(irq);

14
arch/powerpc/kernel/legacy_serial.c
View file

@ -193,10 +193,10 @@ static int __init add_legacy_soc_port(struct device_node *np,
*/
if (tsi && !strcmp(tsi->type, "tsi-bridge"))
return add_legacy_port(np, -1, UPIO_TSI, addr, addr,
NO_IRQ, legacy_port_flags, 0);
0, legacy_port_flags, 0);
else
return add_legacy_port(np, -1, UPIO_MEM, addr, addr,
NO_IRQ, legacy_port_flags, 0);
0, legacy_port_flags, 0);
}
static int __init add_legacy_isa_port(struct device_node *np,
@ -242,7 +242,7 @@ static int __init add_legacy_isa_port(struct device_node *np,
/* Add port, irq will be dealt with later */
return add_legacy_port(np, index, UPIO_PORT, be32_to_cpu(reg[1]),
taddr, NO_IRQ, legacy_port_flags, 0);
taddr, 0, legacy_port_flags, 0);
}
@ -314,7 +314,7 @@ static int __init add_legacy_pci_port(struct device_node *np,
/* Add port, irq will be dealt with later. We passed a translated
* IO port value. It will be fixed up later along with the irq
*/
return add_legacy_port(np, index, iotype, base, addr, NO_IRQ,
return add_legacy_port(np, index, iotype, base, addr, 0,
legacy_port_flags, np != pci_dev);
}
#endif
@ -462,14 +462,14 @@ static void __init fixup_port_irq(int index,
DBG("fixup_port_irq(%d)\n", index);
virq = irq_of_parse_and_map(np, 0);
if (virq == NO_IRQ && legacy_serial_infos[index].irq_check_parent) {
if (!virq && legacy_serial_infos[index].irq_check_parent) {
np = of_get_parent(np);
if (np == NULL)
return;
virq = irq_of_parse_and_map(np, 0);
of_node_put(np);
}
if (virq == NO_IRQ)
if (!virq)
return;
port->irq = virq;
@ -543,7 +543,7 @@ static int __init serial_dev_init(void)
struct plat_serial8250_port *port = &legacy_serial_ports[i];
struct device_node *np = legacy_serial_infos[i].np;
if (port->irq == NO_IRQ)
if (!port->irq)
fixup_port_irq(i, np, port);
if (port->iotype == UPIO_PORT)
fixup_port_pio(i, np, port);

75
arch/powerpc/kernel/machine_kexec_64.c
View file

@ -23,6 +23,7 @@
#include <asm/current.h>
#include <asm/machdep.h>
#include <asm/cacheflush.h>
#include <asm/firmware.h>
#include <asm/paca.h>
#include <asm/mmu.h>
#include <asm/sections.h> /* _end */
@ -31,21 +32,6 @@
#include <asm/hw_breakpoint.h>
#include <asm/asm-prototypes.h>
#ifdef CONFIG_PPC_BOOK3E
int default_machine_kexec_prepare(struct kimage *image)
{
int i;
/*
* Since we use the kernel fault handlers and paging code to
* handle the virtual mode, we must make sure no destination
* overlaps kernel static data or bss.
*/
for (i = 0; i < image->nr_segments; i++)
if (image->segment[i].mem < __pa(_end))
return -ETXTBSY;
return 0;
}
#else
int default_machine_kexec_prepare(struct kimage *image)
{
int i;
@ -55,9 +41,6 @@ int default_machine_kexec_prepare(struct kimage *image)
const unsigned long *basep;
const unsigned int *sizep;
if (!mmu_hash_ops.hpte_clear_all)
return -ENOENT;
/*
* Since we use the kernel fault handlers and paging code to
* handle the virtual mode, we must make sure no destination
@ -67,31 +50,6 @@ int default_machine_kexec_prepare(struct kimage *image)
if (image->segment[i].mem < __pa(_end))
return -ETXTBSY;
/*
* For non-LPAR, we absolutely can not overwrite the mmu hash
* table, since we are still using the bolted entries in it to
* do the copy. Check that here.
*
* It is safe if the end is below the start of the blocked
* region (end <= low), or if the beginning is after the
* end of the blocked region (begin >= high). Use the
* boolean identity !(a || b) === (!a && !b).
*/
#ifdef CONFIG_PPC_STD_MMU_64
if (htab_address) {
low = __pa(htab_address);
high = low + htab_size_bytes;
for (i = 0; i < image->nr_segments; i++) {
begin = image->segment[i].mem;
end = begin + image->segment[i].memsz;
if ((begin < high) && (end > low))
return -ETXTBSY;
}
}
#endif /* CONFIG_PPC_STD_MMU_64 */
/* We also should not overwrite the tce tables */
for_each_node_by_type(node, "pci") {
basep = of_get_property(node, "linux,tce-base", NULL);
@ -113,7 +71,6 @@ int default_machine_kexec_prepare(struct kimage *image)
return 0;
}
#endif /* !CONFIG_PPC_BOOK3E */
static void copy_segments(unsigned long ind)
{
@ -332,11 +289,14 @@ struct paca_struct kexec_paca;
/* Our assembly helper, in misc_64.S */
extern void kexec_sequence(void *newstack, unsigned long start,
void *image, void *control,
void (*clear_all)(void)) __noreturn;
void (*clear_all)(void),
bool copy_with_mmu_off) __noreturn;
/* too late to fail here */
void default_machine_kexec(struct kimage *image)
{
bool copy_with_mmu_off;
/* prepare control code if any */
/*
@ -374,18 +334,29 @@ void default_machine_kexec(struct kimage *image)
/* XXX: If anyone does 'dynamic lppacas' this will also need to be
* switched to a static version!
*/
/*
* On Book3S, the copy must happen with the MMU off if we are either
* using Radix page tables or we are not in an LPAR since we can
* overwrite the page tables while copying.
*
* In an LPAR, we keep the MMU on otherwise we can't access beyond
* the RMA. On BookE there is no real MMU off mode, so we have to
* keep it enabled as well (but then we have bolted TLB entries).
*/
#ifdef CONFIG_PPC_BOOK3E
copy_with_mmu_off = false;
#else
copy_with_mmu_off = radix_enabled() ||
!(firmware_has_feature(FW_FEATURE_LPAR) ||
firmware_has_feature(FW_FEATURE_PS3_LV1));
#endif
/* Some things are best done in assembly. Finding globals with
* a toc is easier in C, so pass in what we can.
*/
kexec_sequence(&kexec_stack, image->start, image,
page_address(image->control_code_page),
#ifdef CONFIG_PPC_STD_MMU
mmu_hash_ops.hpte_clear_all
#else
NULL
#endif
);
page_address(image->control_code_page),
mmu_cleanup_all, copy_with_mmu_off);
/* NOTREACHED */
}

4
arch/powerpc/kernel/misc_32.S
View file

@ -328,7 +328,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_UNIFIED_ID_CACHE)
*
* flush_icache_range(unsigned long start, unsigned long stop)
*/
_KPROBE(flush_icache_range)
_GLOBAL(flush_icache_range)
BEGIN_FTR_SECTION
PURGE_PREFETCHED_INS
blr /* for 601, do nothing */
@ -358,6 +358,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
sync /* additional sync needed on g4 */
isync
blr
_ASM_NOKPROBE_SYMBOL(flush_icache_range)
/*
* Flush a particular page from the data cache to RAM.
* Note: this is necessary because the instruction cache does *not*

30
arch/powerpc/kernel/misc_64.S
View file

@ -66,7 +66,7 @@ PPC64_CACHES:
* flush all bytes from start through stop-1 inclusive
*/
_KPROBE(flush_icache_range)
_GLOBAL(flush_icache_range)
BEGIN_FTR_SECTION
PURGE_PREFETCHED_INS
blr
@ -109,7 +109,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
bdnz 2b
isync
blr
.previous .text
_ASM_NOKPROBE_SYMBOL(flush_icache_range)
/*
* Like above, but only do the D-cache.
*
@ -591,7 +592,8 @@ real_mode: /* assume normal blr return */
#endif
/*
* kexec_sequence(newstack, start, image, control, clear_all())
* kexec_sequence(newstack, start, image, control, clear_all(),
copy_with_mmu_off)
*
* does the grungy work with stack switching and real mode switches
* also does simple calls to other code
@ -627,7 +629,7 @@ _GLOBAL(kexec_sequence)
mr r29,r5 /* image (virt) */
mr r28,r6 /* control, unused */
mr r27,r7 /* clear_all() fn desc */
mr r26,r8 /* spare */
mr r26,r8 /* copy_with_mmu_off */
lhz r25,PACAHWCPUID(r13) /* get our phys cpu from paca */
/* disable interrupts, we are overwriting kernel data next */
@ -639,15 +641,24 @@ _GLOBAL(kexec_sequence)
mtmsrd r3,1
#endif
/* We need to turn the MMU off unless we are in hash mode
* under a hypervisor
*/
cmpdi r26,0
beq 1f
bl real_mode
1:
/* copy dest pages, flush whole dest image */
mr r3,r29
bl kexec_copy_flush /* (image) */
/* turn off mmu */
/* turn off mmu now if not done earlier */
cmpdi r26,0
bne 1f
bl real_mode
/* copy 0x100 bytes starting at start to 0 */
li r3,0
1: li r3,0
mr r4,r30 /* start, aka phys mem offset */
li r5,0x100
li r6,0
@ -659,7 +670,9 @@ _GLOBAL(kexec_sequence)
li r6,1
stw r6,kexec_flag-1b(5)
#ifndef CONFIG_PPC_BOOK3E
cmpdi r27,0
beq 1f
/* clear out hardware hash page table and tlb */
#ifdef PPC64_ELF_ABI_v1
ld r12,0(r27) /* deref function descriptor */
@ -668,7 +681,6 @@ _GLOBAL(kexec_sequence)
#endif
mtctr r12
bctrl /* mmu_hash_ops.hpte_clear_all(void); */
#endif /* !CONFIG_PPC_BOOK3E */
/*
* kexec image calling is:
@ -695,7 +707,7 @@ _GLOBAL(kexec_sequence)
* are the boot cpu ?????
* other device tree differences (prop sizes, va vs pa, etc)...
*/
mr r3,r25 # my phys cpu
1: mr r3,r25 # my phys cpu
mr r4,r30 # start, aka phys mem offset
mtlr 4
li r5,0

2
arch/powerpc/kernel/module.c
View file

@ -27,7 +27,7 @@
#include <linux/sort.h>
#include <asm/setup.h>
LIST_HEAD(module_bug_list);
static LIST_HEAD(module_bug_list);
static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,

10
arch/powerpc/kernel/nvram_64.c
View file

@ -542,9 +542,9 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type,
time->tv_nsec = 0;
}
*buf = kmemdup(buff + hdr_size, length, GFP_KERNEL);
kfree(buff);
if (*buf == NULL)
return -ENOMEM;
kfree(buff);
*ecc_notice_size = 0;
if (err_type == ERR_TYPE_KERNEL_PANIC_GZ)
@ -851,7 +851,7 @@ static long dev_nvram_ioctl(struct file *file, unsigned int cmd,
}
}
const struct file_operations nvram_fops = {
static const struct file_operations nvram_fops = {
.owner = THIS_MODULE,
.llseek = dev_nvram_llseek,
.read = dev_nvram_read,
@ -956,7 +956,7 @@ int __init nvram_remove_partition(const char *name, int sig,
/* Make partition a free partition */
part->header.signature = NVRAM_SIG_FREE;
strncpy(part->header.name, "wwwwwwwwwwww", 12);
memset(part->header.name, 'w', 12);
part->header.checksum = nvram_checksum(&part->header);
rc = nvram_write_header(part);
if (rc <= 0) {
@ -974,8 +974,8 @@ int __init nvram_remove_partition(const char *name, int sig,
}
if (prev) {
prev->header.length += part->header.length;
prev->header.checksum = nvram_checksum(&part->header);
rc = nvram_write_header(part);
prev->header.checksum = nvram_checksum(&prev->header);
rc = nvram_write_header(prev);
if (rc <= 0) {
printk(KERN_ERR "nvram_remove_partition: nvram_write failed (%d)\n", rc);
return rc;

5
arch/powerpc/kernel/pci-common.c
View file

@ -360,7 +360,7 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
line, pin);
virq = irq_create_mapping(NULL, line);
if (virq != NO_IRQ)
if (virq)
irq_set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
} else {
pr_debug(" Got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
@ -369,7 +369,8 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
virq = irq_create_of_mapping(&oirq);
}
if(virq == NO_IRQ) {
if (!virq) {
pr_debug(" Failed to map !\n");
return -1;
}

2
arch/powerpc/kernel/pci_of_scan.c
View file

@ -178,7 +178,7 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
dev->hdr_type = PCI_HEADER_TYPE_NORMAL;
dev->rom_base_reg = PCI_ROM_ADDRESS;
/* Maybe do a default OF mapping here */
dev->irq = NO_IRQ;
dev->irq = 0;
}
of_pci_parse_addrs(node, dev);

181
arch/powerpc/kernel/process.c
View file

@ -59,6 +59,7 @@
#include <asm/exec.h>
#include <asm/livepatch.h>
#include <asm/cpu_has_feature.h>
#include <asm/asm-prototypes.h>
#include <linux/kprobes.h>
#include <linux/kdebug.h>
@ -88,7 +89,13 @@ static void check_if_tm_restore_required(struct task_struct *tsk)
set_thread_flag(TIF_RESTORE_TM);
}
}
static inline bool msr_tm_active(unsigned long msr)
{
return MSR_TM_ACTIVE(msr);
}
#else
static inline bool msr_tm_active(unsigned long msr) { return false; }
static inline void check_if_tm_restore_required(struct task_struct *tsk) { }
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
@ -104,7 +111,7 @@ static int __init enable_strict_msr_control(char *str)
}
early_param("ppc_strict_facility_enable", enable_strict_msr_control);
void msr_check_and_set(unsigned long bits)
unsigned long msr_check_and_set(unsigned long bits)
{
unsigned long oldmsr = mfmsr();
unsigned long newmsr;
@ -118,6 +125,8 @@ void msr_check_and_set(unsigned long bits)
if (oldmsr != newmsr)
mtmsr_isync(newmsr);
return newmsr;
}
void __msr_check_and_clear(unsigned long bits)
@ -196,19 +205,30 @@ EXPORT_SYMBOL_GPL(flush_fp_to_thread);
void enable_kernel_fp(void)
{
unsigned long cpumsr;
WARN_ON(preemptible());
msr_check_and_set(MSR_FP);
cpumsr = msr_check_and_set(MSR_FP);
if (current->thread.regs && (current->thread.regs->msr & MSR_FP)) {
check_if_tm_restore_required(current);
/*
* If a thread has already been reclaimed then the
* checkpointed registers are on the CPU but have definitely
* been saved by the reclaim code. Don't need to and *cannot*
* giveup as this would save to the 'live' structure not the
* checkpointed structure.
*/
if(!msr_tm_active(cpumsr) && msr_tm_active(current->thread.regs->msr))
return;
__giveup_fpu(current);
}
}
EXPORT_SYMBOL(enable_kernel_fp);
static int restore_fp(struct task_struct *tsk) {
if (tsk->thread.load_fp) {
if (tsk->thread.load_fp || msr_tm_active(tsk->thread.regs->msr)) {
load_fp_state(&current->thread.fp_state);
current->thread.load_fp++;
return 1;
@ -248,12 +268,23 @@ EXPORT_SYMBOL(giveup_altivec);
void enable_kernel_altivec(void)
{
unsigned long cpumsr;
WARN_ON(preemptible());
msr_check_and_set(MSR_VEC);
cpumsr = msr_check_and_set(MSR_VEC);
if (current->thread.regs && (current->thread.regs->msr & MSR_VEC)) {
check_if_tm_restore_required(current);
/*
* If a thread has already been reclaimed then the
* checkpointed registers are on the CPU but have definitely
* been saved by the reclaim code. Don't need to and *cannot*
* giveup as this would save to the 'live' structure not the
* checkpointed structure.
*/
if(!msr_tm_active(cpumsr) && msr_tm_active(current->thread.regs->msr))
return;
__giveup_altivec(current);
}
}
@ -278,7 +309,8 @@ EXPORT_SYMBOL_GPL(flush_altivec_to_thread);
static int restore_altivec(struct task_struct *tsk)
{
if (cpu_has_feature(CPU_FTR_ALTIVEC) && tsk->thread.load_vec) {
if (cpu_has_feature(CPU_FTR_ALTIVEC) &&
(tsk->thread.load_vec || msr_tm_active(tsk->thread.regs->msr))) {
load_vr_state(&tsk->thread.vr_state);
tsk->thread.used_vr = 1;
tsk->thread.load_vec++;
@ -321,12 +353,23 @@ static void save_vsx(struct task_struct *tsk)
void enable_kernel_vsx(void)
{
unsigned long cpumsr;
WARN_ON(preemptible());
msr_check_and_set(MSR_FP|MSR_VEC|MSR_VSX);
cpumsr = msr_check_and_set(MSR_FP|MSR_VEC|MSR_VSX);
if (current->thread.regs && (current->thread.regs->msr & MSR_VSX)) {
check_if_tm_restore_required(current);
/*
* If a thread has already been reclaimed then the
* checkpointed registers are on the CPU but have definitely
* been saved by the reclaim code. Don't need to and *cannot*
* giveup as this would save to the 'live' structure not the
* checkpointed structure.
*/
if(!msr_tm_active(cpumsr) && msr_tm_active(current->thread.regs->msr))
return;
if (current->thread.regs->msr & MSR_FP)
__giveup_fpu(current);
if (current->thread.regs->msr & MSR_VEC)
@ -438,6 +481,7 @@ void giveup_all(struct task_struct *tsk)
return;
msr_check_and_set(msr_all_available);
check_if_tm_restore_required(tsk);
#ifdef CONFIG_PPC_FPU
if (usermsr & MSR_FP)
@ -464,7 +508,8 @@ void restore_math(struct pt_regs *regs)
{
unsigned long msr;
if (!current->thread.load_fp && !loadvec(current->thread))
if (!msr_tm_active(regs->msr) &&
!current->thread.load_fp && !loadvec(current->thread))
return;
msr = regs->msr;
@ -767,29 +812,15 @@ static inline bool hw_brk_match(struct arch_hw_breakpoint *a,
}
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
static inline bool tm_enabled(struct task_struct *tsk)
{
return tsk && tsk->thread.regs && (tsk->thread.regs->msr & MSR_TM);
}
static void tm_reclaim_thread(struct thread_struct *thr,
struct thread_info *ti, uint8_t cause)
{
unsigned long msr_diff = 0;
/*
* If FP/VSX registers have been already saved to the
* thread_struct, move them to the transact_fp array.
* We clear the TIF_RESTORE_TM bit since after the reclaim
* the thread will no longer be transactional.
*/
if (test_ti_thread_flag(ti, TIF_RESTORE_TM)) {
msr_diff = thr->ckpt_regs.msr & ~thr->regs->msr;
if (msr_diff & MSR_FP)
memcpy(&thr->transact_fp, &thr->fp_state,
sizeof(struct thread_fp_state));
if (msr_diff & MSR_VEC)
memcpy(&thr->transact_vr, &thr->vr_state,
sizeof(struct thread_vr_state));
clear_ti_thread_flag(ti, TIF_RESTORE_TM);
msr_diff &= MSR_FP | MSR_VEC | MSR_VSX | MSR_FE0 | MSR_FE1;
}
/*
* Use the current MSR TM suspended bit to track if we have
* checkpointed state outstanding.
@ -808,15 +839,9 @@ static void tm_reclaim_thread(struct thread_struct *thr,
if (!MSR_TM_SUSPENDED(mfmsr()))
return;
tm_reclaim(thr, thr->regs->msr, cause);
giveup_all(container_of(thr, struct task_struct, thread));
/* Having done the reclaim, we now have the checkpointed
* FP/VSX values in the registers. These might be valid
* even if we have previously called enable_kernel_fp() or
* flush_fp_to_thread(), so update thr->regs->msr to
* indicate their current validity.
*/
thr->regs->msr |= msr_diff;
tm_reclaim(thr, thr->ckpt_regs.msr, cause);
}
void tm_reclaim_current(uint8_t cause)
@ -832,8 +857,8 @@ static inline void tm_reclaim_task(struct task_struct *tsk)
*
* In switching we need to maintain a 2nd register state as
* oldtask->thread.ckpt_regs. We tm_reclaim(oldproc); this saves the
* checkpointed (tbegin) state in ckpt_regs and saves the transactional
* (current) FPRs into oldtask->thread.transact_fpr[].
* checkpointed (tbegin) state in ckpt_regs, ckfp_state and
* ckvr_state
*
* We also context switch (save) TFHAR/TEXASR/TFIAR in here.
*/
@ -845,14 +870,6 @@ static inline void tm_reclaim_task(struct task_struct *tsk)
if (!MSR_TM_ACTIVE(thr->regs->msr))
goto out_and_saveregs;
/* Stash the original thread MSR, as giveup_fpu et al will
* modify it. We hold onto it to see whether the task used
* FP & vector regs. If the TIF_RESTORE_TM flag is set,
* ckpt_regs.msr is already set.
*/
if (!test_ti_thread_flag(task_thread_info(tsk), TIF_RESTORE_TM))
thr->ckpt_regs.msr = thr->regs->msr;
TM_DEBUG("--- tm_reclaim on pid %d (NIP=%lx, "
"ccr=%lx, msr=%lx, trap=%lx)\n",
tsk->pid, thr->regs->nip,
@ -881,6 +898,9 @@ void tm_recheckpoint(struct thread_struct *thread,
{
unsigned long flags;
if (!(thread->regs->msr & MSR_TM))
return;
/* We really can't be interrupted here as the TEXASR registers can't
* change and later in the trecheckpoint code, we have a userspace R1.
* So let's hard disable over this region.
@ -910,10 +930,10 @@ static inline void tm_recheckpoint_new_task(struct task_struct *new)
* If the task was using FP, we non-lazily reload both the original and
* the speculative FP register states. This is because the kernel
* doesn't see if/when a TM rollback occurs, so if we take an FP
* unavoidable later, we are unable to determine which set of FP regs
* unavailable later, we are unable to determine which set of FP regs
* need to be restored.
*/
if (!new->thread.regs)
if (!tm_enabled(new))
return;
if (!MSR_TM_ACTIVE(new->thread.regs->msr)){
@ -926,35 +946,35 @@ static inline void tm_recheckpoint_new_task(struct task_struct *new)
"(new->msr 0x%lx, new->origmsr 0x%lx)\n",
new->pid, new->thread.regs->msr, msr);
/* This loads the checkpointed FP/VEC state, if used */
tm_recheckpoint(&new->thread, msr);
/* This loads the speculative FP/VEC state, if used */
if (msr & MSR_FP) {
do_load_up_transact_fpu(&new->thread);
new->thread.regs->msr |=
(MSR_FP | new->thread.fpexc_mode);
}
#ifdef CONFIG_ALTIVEC
if (msr & MSR_VEC) {
do_load_up_transact_altivec(&new->thread);
new->thread.regs->msr |= MSR_VEC;
}
#endif
/* We may as well turn on VSX too since all the state is restored now */
if (msr & MSR_VSX)
new->thread.regs->msr |= MSR_VSX;
/*
* The checkpointed state has been restored but the live state has
* not, ensure all the math functionality is turned off to trigger
* restore_math() to reload.
*/
new->thread.regs->msr &= ~(MSR_FP | MSR_VEC | MSR_VSX);
TM_DEBUG("*** tm_recheckpoint of pid %d complete "
"(kernel msr 0x%lx)\n",
new->pid, mfmsr());
}
static inline void __switch_to_tm(struct task_struct *prev)
static inline void __switch_to_tm(struct task_struct *prev,
struct task_struct *new)
{
if (cpu_has_feature(CPU_FTR_TM)) {
tm_enable();
tm_reclaim_task(prev);
if (tm_enabled(prev) || tm_enabled(new))
tm_enable();
if (tm_enabled(prev)) {
prev->thread.load_tm++;
tm_reclaim_task(prev);
if (!MSR_TM_ACTIVE(prev->thread.regs->msr) && prev->thread.load_tm == 0)
prev->thread.regs->msr &= ~MSR_TM;
}
tm_recheckpoint_new_task(new);
}
}
@ -976,6 +996,12 @@ void restore_tm_state(struct pt_regs *regs)
{
unsigned long msr_diff;
/*
* This is the only moment we should clear TIF_RESTORE_TM as
* it is here that ckpt_regs.msr and pt_regs.msr become the same
* again, anything else could lead to an incorrect ckpt_msr being
* saved and therefore incorrect signal contexts.
*/
clear_thread_flag(TIF_RESTORE_TM);
if (!MSR_TM_ACTIVE(regs->msr))
return;
@ -983,6 +1009,13 @@ void restore_tm_state(struct pt_regs *regs)
msr_diff = current->thread.ckpt_regs.msr & ~regs->msr;
msr_diff &= MSR_FP | MSR_VEC | MSR_VSX;
/* Ensure that restore_math() will restore */
if (msr_diff & MSR_FP)
current->thread.load_fp = 1;
#ifdef CONFIG_ALIVEC
if (cpu_has_feature(CPU_FTR_ALTIVEC) && msr_diff & MSR_VEC)
current->thread.load_vec = 1;
#endif
restore_math(regs);
regs->msr |= msr_diff;
@ -990,7 +1023,7 @@ void restore_tm_state(struct pt_regs *regs)
#else
#define tm_recheckpoint_new_task(new)
#define __switch_to_tm(prev)
#define __switch_to_tm(prev, new)
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
static inline void save_sprs(struct thread_struct *t)
@ -1131,11 +1164,11 @@ struct task_struct *__switch_to(struct task_struct *prev,
*/
save_sprs(&prev->thread);
__switch_to_tm(prev);
/* Save FPU, Altivec, VSX and SPE state */
giveup_all(prev);
__switch_to_tm(prev, new);
/*
* We can't take a PMU exception inside _switch() since there is a
* window where the kernel stack SLB and the kernel stack are out
@ -1143,8 +1176,6 @@ struct task_struct *__switch_to(struct task_struct *prev,
*/
hard_irq_disable();
tm_recheckpoint_new_task(new);
/*
* Call restore_sprs() before calling _switch(). If we move it after
* _switch() then we miss out on calling it for new tasks. The reason
@ -1379,9 +1410,11 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
* transitions the CPU out of TM mode. Hence we need to call
* tm_recheckpoint_new_task() (on the same task) to restore the
* checkpointed state back and the TM mode.
*
* Can't pass dst because it isn't ready. Doesn't matter, passing
* dst is only important for __switch_to()
*/
__switch_to_tm(src);
tm_recheckpoint_new_task(src);
__switch_to_tm(src, src);
*dst = *src;
@ -1623,8 +1656,6 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
current->thread.used_spe = 0;
#endif /* CONFIG_SPE */
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (cpu_has_feature(CPU_FTR_TM))
regs->msr |= MSR_TM;
current->thread.tm_tfhar = 0;
current->thread.tm_texasr = 0;
current->thread.tm_tfiar = 0;

82
arch/powerpc/kernel/prom_init.c
View file

@ -42,6 +42,7 @@
#include <asm/sections.h>
#include <asm/machdep.h>
#include <asm/opal.h>
#include <asm/asm-prototypes.h>
#include <linux/linux_logo.h>
@ -2643,6 +2644,86 @@ static void __init fixup_device_tree_efika(void)
#define fixup_device_tree_efika()
#endif
#ifdef CONFIG_PPC_PASEMI_NEMO
/*
* CFE supplied on Nemo is broken in several ways, biggest
* problem is that it reassigns ISA interrupts to unused mpic ints.
* Add an interrupt-controller property for the io-bridge to use
* and correct the ints so we can attach them to an irq_domain
*/
static void __init fixup_device_tree_pasemi(void)
{
u32 interrupts[2], parent, rval, val = 0;
char *name, *pci_name;
phandle iob, node;
/* Find the root pci node */
name = "/pxp@0,e0000000";
iob = call_prom("finddevice", 1, 1, ADDR(name));
if (!PHANDLE_VALID(iob))
return;
/* check if interrupt-controller node set yet */
if (prom_getproplen(iob, "interrupt-controller") !=PROM_ERROR)
return;
prom_printf("adding interrupt-controller property for SB600...\n");
prom_setprop(iob, name, "interrupt-controller", &val, 0);
pci_name = "/pxp@0,e0000000/pci@11";
node = call_prom("finddevice", 1, 1, ADDR(pci_name));
parent = ADDR(iob);
for( ; prom_next_node(&node); ) {
/* scan each node for one with an interrupt */
if (!PHANDLE_VALID(node))
continue;
rval = prom_getproplen(node, "interrupts");
if (rval == 0 || rval == PROM_ERROR)
continue;
prom_getprop(node, "interrupts", &interrupts, sizeof(interrupts));
if ((interrupts[0] < 212) || (interrupts[0] > 222))
continue;
/* found a node, update both interrupts and interrupt-parent */
if ((interrupts[0] >= 212) && (interrupts[0] <= 215))
interrupts[0] -= 203;
if ((interrupts[0] >= 216) && (interrupts[0] <= 220))
interrupts[0] -= 213;
if (interrupts[0] == 221)
interrupts[0] = 14;
if (interrupts[0] == 222)
interrupts[0] = 8;
prom_setprop(node, pci_name, "interrupts", interrupts,
sizeof(interrupts));
prom_setprop(node, pci_name, "interrupt-parent", &parent,
sizeof(parent));
}
/*
* The io-bridge has device_type set to 'io-bridge' change it to 'isa'
* so that generic isa-bridge code can add the SB600 and its on-board
* peripherals.
*/
name = "/pxp@0,e0000000/io-bridge@0";
iob = call_prom("finddevice", 1, 1, ADDR(name));
if (!PHANDLE_VALID(iob))
return;
/* device_type is already set, just change it. */
prom_printf("Changing device_type of SB600 node...\n");
prom_setprop(iob, name, "device_type", "isa", sizeof("isa"));
}
#else /* !CONFIG_PPC_PASEMI_NEMO */
static inline void fixup_device_tree_pasemi(void) { }
#endif
static void __init fixup_device_tree(void)
{
fixup_device_tree_maple();
@ -2650,6 +2731,7 @@ static void __init fixup_device_tree(void)
fixup_device_tree_chrp();
fixup_device_tree_pmac();
fixup_device_tree_efika();
fixup_device_tree_pasemi();
}
static void __init prom_find_boot_cpu(void)

353
arch/powerpc/kernel/ptrace.c
View file

@ -39,6 +39,7 @@
#include <asm/pgtable.h>
#include <asm/switch_to.h>
#include <asm/tm.h>
#include <asm/asm-prototypes.h>
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
@ -402,13 +403,9 @@ static int gpr_set(struct task_struct *target, const struct user_regset *regset,
}
/*
* When the transaction is active, 'transact_fp' holds the current running
* value of all FPR registers and 'fp_state' holds the last checkpointed
* value of all FPR registers for the current transaction. When transaction
* is not active 'fp_state' holds the current running state of all the FPR
* registers. So this function which returns the current running values of
* all the FPR registers, needs to know whether any transaction is active
* or not.
* Regardless of transactions, 'fp_state' holds the current running
* value of all FPR registers and 'ckfp_state' holds the last checkpointed
* value of all FPR registers for the current transaction.
*
* Userspace interface buffer layout:
*
@ -416,13 +413,6 @@ static int gpr_set(struct task_struct *target, const struct user_regset *regset,
* u64 fpr[32];
* u64 fpscr;
* };
*
* There are two config options CONFIG_VSX and CONFIG_PPC_TRANSACTIONAL_MEM
* which determines the final code in this function. All the combinations of
* these two config options are possible except the one below as transactional
* memory config pulls in CONFIG_VSX automatically.
*
* !defined(CONFIG_VSX) && defined(CONFIG_PPC_TRANSACTIONAL_MEM)
*/
static int fpr_get(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
@ -431,50 +421,29 @@ static int fpr_get(struct task_struct *target, const struct user_regset *regset,
#ifdef CONFIG_VSX
u64 buf[33];
int i;
#endif
flush_fp_to_thread(target);
#if defined(CONFIG_VSX) && defined(CONFIG_PPC_TRANSACTIONAL_MEM)
/* copy to local buffer then write that out */
if (MSR_TM_ACTIVE(target->thread.regs->msr)) {
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.TS_TRANS_FPR(i);
buf[32] = target->thread.transact_fp.fpscr;
} else {
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.TS_FPR(i);
buf[32] = target->thread.fp_state.fpscr;
}
return user_regset_copyout(&pos, &count, &kbuf, &ubuf, buf, 0, -1);
#endif
#if defined(CONFIG_VSX) && !defined(CONFIG_PPC_TRANSACTIONAL_MEM)
/* copy to local buffer then write that out */
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.TS_FPR(i);
buf[32] = target->thread.fp_state.fpscr;
return user_regset_copyout(&pos, &count, &kbuf, &ubuf, buf, 0, -1);
#endif
#if !defined(CONFIG_VSX) && !defined(CONFIG_PPC_TRANSACTIONAL_MEM)
#else
BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) !=
offsetof(struct thread_fp_state, fpr[32]));
flush_fp_to_thread(target);
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
&target->thread.fp_state, 0, -1);
#endif
}
/*
* When the transaction is active, 'transact_fp' holds the current running
* value of all FPR registers and 'fp_state' holds the last checkpointed
* value of all FPR registers for the current transaction. When transaction
* is not active 'fp_state' holds the current running state of all the FPR
* registers. So this function which setss the current running values of
* all the FPR registers, needs to know whether any transaction is active
* or not.
* Regardless of transactions, 'fp_state' holds the current running
* value of all FPR registers and 'ckfp_state' holds the last checkpointed
* value of all FPR registers for the current transaction.
*
* Userspace interface buffer layout:
*
@ -483,12 +452,6 @@ static int fpr_get(struct task_struct *target, const struct user_regset *regset,
* u64 fpscr;
* };
*
* There are two config options CONFIG_VSX and CONFIG_PPC_TRANSACTIONAL_MEM
* which determines the final code in this function. All the combinations of
* these two config options are possible except the one below as transactional
* memory config pulls in CONFIG_VSX automatically.
*
* !defined(CONFIG_VSX) && defined(CONFIG_PPC_TRANSACTIONAL_MEM)
*/
static int fpr_set(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
@ -497,44 +460,24 @@ static int fpr_set(struct task_struct *target, const struct user_regset *regset,
#ifdef CONFIG_VSX
u64 buf[33];
int i;
#endif
flush_fp_to_thread(target);
#if defined(CONFIG_VSX) && defined(CONFIG_PPC_TRANSACTIONAL_MEM)
/* copy to local buffer then write that out */
i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1);
if (i)
return i;
if (MSR_TM_ACTIVE(target->thread.regs->msr)) {
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
for (i = 0; i < 32 ; i++)
target->thread.TS_TRANS_FPR(i) = buf[i];
target->thread.transact_fp.fpscr = buf[32];
} else {
for (i = 0; i < 32 ; i++)
target->thread.TS_FPR(i) = buf[i];
target->thread.fp_state.fpscr = buf[32];
}
return 0;
#endif
#if defined(CONFIG_VSX) && !defined(CONFIG_PPC_TRANSACTIONAL_MEM)
/* copy to local buffer then write that out */
i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1);
if (i)
return i;
for (i = 0; i < 32 ; i++)
target->thread.TS_FPR(i) = buf[i];
target->thread.fp_state.fpscr = buf[32];
return 0;
#endif
#if !defined(CONFIG_VSX) && !defined(CONFIG_PPC_TRANSACTIONAL_MEM)
#else
BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) !=
offsetof(struct thread_fp_state, fpr[32]));
flush_fp_to_thread(target);
return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&target->thread.fp_state, 0, -1);
#endif
@ -562,13 +505,10 @@ static int vr_active(struct task_struct *target,
}
/*
* When the transaction is active, 'transact_vr' holds the current running
* value of all the VMX registers and 'vr_state' holds the last checkpointed
* value of all the VMX registers for the current transaction to fall back
* on in case it aborts. When transaction is not active 'vr_state' holds
* the current running state of all the VMX registers. So this function which
* gets the current running values of all the VMX registers, needs to know
* whether any transaction is active or not.
* Regardless of transactions, 'vr_state' holds the current running
* value of all the VMX registers and 'ckvr_state' holds the last
* checkpointed value of all the VMX registers for the current
* transaction to fall back on in case it aborts.
*
* Userspace interface buffer layout:
*
@ -582,7 +522,6 @@ static int vr_get(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
struct thread_vr_state *addr;
int ret;
flush_altivec_to_thread(target);
@ -590,19 +529,8 @@ static int vr_get(struct task_struct *target, const struct user_regset *regset,
BUILD_BUG_ON(offsetof(struct thread_vr_state, vscr) !=
offsetof(struct thread_vr_state, vr[32]));
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (MSR_TM_ACTIVE(target->thread.regs->msr)) {
flush_fp_to_thread(target);
flush_tmregs_to_thread(target);
addr = &target->thread.transact_vr;
} else {
addr = &target->thread.vr_state;
}
#else
addr = &target->thread.vr_state;
#endif
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
addr, 0,
&target->thread.vr_state, 0,
33 * sizeof(vector128));
if (!ret) {
/*
@ -614,14 +542,7 @@ static int vr_get(struct task_struct *target, const struct user_regset *regset,
} vrsave;
memset(&vrsave, 0, sizeof(vrsave));
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (MSR_TM_ACTIVE(target->thread.regs->msr))
vrsave.word = target->thread.transact_vrsave;
else
vrsave.word = target->thread.vrsave;
#else
vrsave.word = target->thread.vrsave;
#endif
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, &vrsave,
33 * sizeof(vector128), -1);
@ -631,13 +552,10 @@ static int vr_get(struct task_struct *target, const struct user_regset *regset,
}
/*
* When the transaction is active, 'transact_vr' holds the current running
* value of all the VMX registers and 'vr_state' holds the last checkpointed
* value of all the VMX registers for the current transaction to fall back
* on in case it aborts. When transaction is not active 'vr_state' holds
* the current running state of all the VMX registers. So this function which
* sets the current running values of all the VMX registers, needs to know
* whether any transaction is active or not.
* Regardless of transactions, 'vr_state' holds the current running
* value of all the VMX registers and 'ckvr_state' holds the last
* checkpointed value of all the VMX registers for the current
* transaction to fall back on in case it aborts.
*
* Userspace interface buffer layout:
*
@ -651,7 +569,6 @@ static int vr_set(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
struct thread_vr_state *addr;
int ret;
flush_altivec_to_thread(target);
@ -659,19 +576,8 @@ static int vr_set(struct task_struct *target, const struct user_regset *regset,
BUILD_BUG_ON(offsetof(struct thread_vr_state, vscr) !=
offsetof(struct thread_vr_state, vr[32]));
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (MSR_TM_ACTIVE(target->thread.regs->msr)) {
flush_fp_to_thread(target);
flush_tmregs_to_thread(target);
addr = &target->thread.transact_vr;
} else {
addr = &target->thread.vr_state;
}
#else
addr = &target->thread.vr_state;
#endif
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
addr, 0,
&target->thread.vr_state, 0,
33 * sizeof(vector128));
if (!ret && count > 0) {
/*
@ -683,27 +589,12 @@ static int vr_set(struct task_struct *target, const struct user_regset *regset,
} vrsave;
memset(&vrsave, 0, sizeof(vrsave));
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (MSR_TM_ACTIVE(target->thread.regs->msr))
vrsave.word = target->thread.transact_vrsave;
else
vrsave.word = target->thread.vrsave;
#else
vrsave.word = target->thread.vrsave;
#endif
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &vrsave,
33 * sizeof(vector128), -1);
if (!ret) {
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (MSR_TM_ACTIVE(target->thread.regs->msr))
target->thread.transact_vrsave = vrsave.word;
else
target->thread.vrsave = vrsave.word;
#else
if (!ret)
target->thread.vrsave = vrsave.word;
#endif
}
}
return ret;
@ -725,13 +616,10 @@ static int vsr_active(struct task_struct *target,
}
/*
* When the transaction is active, 'transact_fp' holds the current running
* value of all FPR registers and 'fp_state' holds the last checkpointed
* value of all FPR registers for the current transaction. When transaction
* is not active 'fp_state' holds the current running state of all the FPR
* registers. So this function which returns the current running values of
* all the FPR registers, needs to know whether any transaction is active
* or not.
* Regardless of transactions, 'fp_state' holds the current running
* value of all FPR registers and 'ckfp_state' holds the last
* checkpointed value of all FPR registers for the current
* transaction.
*
* Userspace interface buffer layout:
*
@ -746,27 +634,14 @@ static int vsr_get(struct task_struct *target, const struct user_regset *regset,
u64 buf[32];
int ret, i;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
#endif
flush_vsx_to_thread(target);
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (MSR_TM_ACTIVE(target->thread.regs->msr)) {
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.
transact_fp.fpr[i][TS_VSRLOWOFFSET];
} else {
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.
fp_state.fpr[i][TS_VSRLOWOFFSET];
}
#else
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET];
#endif
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
buf, 0, 32 * sizeof(double));
@ -774,12 +649,10 @@ static int vsr_get(struct task_struct *target, const struct user_regset *regset,
}
/*
* When the transaction is active, 'transact_fp' holds the current running
* value of all FPR registers and 'fp_state' holds the last checkpointed
* value of all FPR registers for the current transaction. When transaction
* is not active 'fp_state' holds the current running state of all the FPR
* registers. So this function which sets the current running values of all
* the FPR registers, needs to know whether any transaction is active or not.
* Regardless of transactions, 'fp_state' holds the current running
* value of all FPR registers and 'ckfp_state' holds the last
* checkpointed value of all FPR registers for the current
* transaction.
*
* Userspace interface buffer layout:
*
@ -794,31 +667,16 @@ static int vsr_set(struct task_struct *target, const struct user_regset *regset,
u64 buf[32];
int ret,i;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
#endif
flush_vsx_to_thread(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
buf, 0, 32 * sizeof(double));
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (MSR_TM_ACTIVE(target->thread.regs->msr)) {
if (!ret)
for (i = 0; i < 32 ; i++)
target->thread.transact_fp.
fpr[i][TS_VSRLOWOFFSET] = buf[i];
} else {
for (i = 0; i < 32 ; i++)
target->thread.fp_state.
fpr[i][TS_VSRLOWOFFSET] = buf[i];
}
#else
for (i = 0; i < 32 ; i++)
target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i];
#endif
target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i];
return ret;
}
@ -944,9 +802,9 @@ static int tm_cgpr_get(struct task_struct *target,
if (!MSR_TM_ACTIVE(target->thread.regs->msr))
return -ENODATA;
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
&target->thread.ckpt_regs,
@ -1009,9 +867,9 @@ static int tm_cgpr_set(struct task_struct *target,
if (!MSR_TM_ACTIVE(target->thread.regs->msr))
return -ENODATA;
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&target->thread.ckpt_regs,
@ -1087,7 +945,7 @@ static int tm_cfpr_active(struct task_struct *target,
*
* This function gets in transaction checkpointed FPR registers.
*
* When the transaction is active 'fp_state' holds the checkpointed
* When the transaction is active 'ckfp_state' holds the checkpointed
* values for the current transaction to fall back on if it aborts
* in between. This function gets those checkpointed FPR registers.
* The userspace interface buffer layout is as follows.
@ -1111,14 +969,14 @@ static int tm_cfpr_get(struct task_struct *target,
if (!MSR_TM_ACTIVE(target->thread.regs->msr))
return -ENODATA;
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
/* copy to local buffer then write that out */
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.TS_FPR(i);
buf[32] = target->thread.fp_state.fpscr;
buf[i] = target->thread.TS_CKFPR(i);
buf[32] = target->thread.ckfp_state.fpscr;
return user_regset_copyout(&pos, &count, &kbuf, &ubuf, buf, 0, -1);
}
@ -1133,7 +991,7 @@ static int tm_cfpr_get(struct task_struct *target,
*
* This function sets in transaction checkpointed FPR registers.
*
* When the transaction is active 'fp_state' holds the checkpointed
* When the transaction is active 'ckfp_state' holds the checkpointed
* FPR register values for the current transaction to fall back on
* if it aborts in between. This function sets these checkpointed
* FPR registers. The userspace interface buffer layout is as follows.
@ -1157,17 +1015,17 @@ static int tm_cfpr_set(struct task_struct *target,
if (!MSR_TM_ACTIVE(target->thread.regs->msr))
return -ENODATA;
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
/* copy to local buffer then write that out */
i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1);
if (i)
return i;
for (i = 0; i < 32 ; i++)
target->thread.TS_FPR(i) = buf[i];
target->thread.fp_state.fpscr = buf[32];
target->thread.TS_CKFPR(i) = buf[i];
target->thread.ckfp_state.fpscr = buf[32];
return 0;
}
@ -1202,7 +1060,7 @@ static int tm_cvmx_active(struct task_struct *target,
*
* This function gets in transaction checkpointed VMX registers.
*
* When the transaction is active 'vr_state' and 'vr_save' hold
* When the transaction is active 'ckvr_state' and 'ckvrsave' hold
* the checkpointed values for the current transaction to fall
* back on if it aborts in between. The userspace interface buffer
* layout is as follows.
@ -1229,12 +1087,12 @@ static int tm_cvmx_get(struct task_struct *target,
return -ENODATA;
/* Flush the state */
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
&target->thread.vr_state, 0,
&target->thread.ckvr_state, 0,
33 * sizeof(vector128));
if (!ret) {
/*
@ -1245,7 +1103,7 @@ static int tm_cvmx_get(struct task_struct *target,
u32 word;
} vrsave;
memset(&vrsave, 0, sizeof(vrsave));
vrsave.word = target->thread.vrsave;
vrsave.word = target->thread.ckvrsave;
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, &vrsave,
33 * sizeof(vector128), -1);
}
@ -1264,7 +1122,7 @@ static int tm_cvmx_get(struct task_struct *target,
*
* This function sets in transaction checkpointed VMX registers.
*
* When the transaction is active 'vr_state' and 'vr_save' hold
* When the transaction is active 'ckvr_state' and 'ckvrsave' hold
* the checkpointed values for the current transaction to fall
* back on if it aborts in between. The userspace interface buffer
* layout is as follows.
@ -1290,12 +1148,12 @@ static int tm_cvmx_set(struct task_struct *target,
if (!MSR_TM_ACTIVE(target->thread.regs->msr))
return -ENODATA;
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&target->thread.vr_state, 0,
&target->thread.ckvr_state, 0,
33 * sizeof(vector128));
if (!ret && count > 0) {
/*
@ -1306,11 +1164,11 @@ static int tm_cvmx_set(struct task_struct *target,
u32 word;
} vrsave;
memset(&vrsave, 0, sizeof(vrsave));
vrsave.word = target->thread.vrsave;
vrsave.word = target->thread.ckvrsave;
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &vrsave,
33 * sizeof(vector128), -1);
if (!ret)
target->thread.vrsave = vrsave.word;
target->thread.ckvrsave = vrsave.word;
}
return ret;
@ -1348,7 +1206,7 @@ static int tm_cvsx_active(struct task_struct *target,
*
* This function gets in transaction checkpointed VSX registers.
*
* When the transaction is active 'fp_state' holds the checkpointed
* When the transaction is active 'ckfp_state' holds the checkpointed
* values for the current transaction to fall back on if it aborts
* in between. This function gets those checkpointed VSX registers.
* The userspace interface buffer layout is as follows.
@ -1372,13 +1230,13 @@ static int tm_cvsx_get(struct task_struct *target,
return -ENODATA;
/* Flush the state */
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
flush_vsx_to_thread(target);
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET];
buf[i] = target->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET];
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
buf, 0, 32 * sizeof(double));
@ -1396,7 +1254,7 @@ static int tm_cvsx_get(struct task_struct *target,
*
* This function sets in transaction checkpointed VSX registers.
*
* When the transaction is active 'fp_state' holds the checkpointed
* When the transaction is active 'ckfp_state' holds the checkpointed
* VSX register values for the current transaction to fall back on
* if it aborts in between. This function sets these checkpointed
* FPR registers. The userspace interface buffer layout is as follows.
@ -1420,15 +1278,16 @@ static int tm_cvsx_set(struct task_struct *target,
return -ENODATA;
/* Flush the state */
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
flush_vsx_to_thread(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
buf, 0, 32 * sizeof(double));
for (i = 0; i < 32 ; i++)
target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i];
if (!ret)
for (i = 0; i < 32 ; i++)
target->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i];
return ret;
}
@ -1484,9 +1343,9 @@ static int tm_spr_get(struct task_struct *target,
return -ENODEV;
/* Flush the states */
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
/* TFHAR register */
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
@ -1540,9 +1399,9 @@ static int tm_spr_set(struct task_struct *target,
return -ENODEV;
/* Flush the states */
flush_tmregs_to_thread(target);
flush_fp_to_thread(target);
flush_altivec_to_thread(target);
flush_tmregs_to_thread(target);
/* TFHAR register */
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
@ -2065,33 +1924,12 @@ static const struct user_regset_view user_ppc_native_view = {
static int gpr32_get_common(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf, bool tm_active)
void *kbuf, void __user *ubuf,
unsigned long *regs)
{
const unsigned long *regs = &target->thread.regs->gpr[0];
const unsigned long *ckpt_regs;
compat_ulong_t *k = kbuf;
compat_ulong_t __user *u = ubuf;
compat_ulong_t reg;
int i;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
ckpt_regs = &target->thread.ckpt_regs.gpr[0];
#endif
if (tm_active) {
regs = ckpt_regs;
} else {
if (target->thread.regs == NULL)
return -EIO;
if (!FULL_REGS(target->thread.regs)) {
/*
* We have a partial register set.
* Fill 14-31 with bogus values.
*/
for (i = 14; i < 32; i++)
target->thread.regs->gpr[i] = NV_REG_POISON;
}
}
pos /= sizeof(reg);
count /= sizeof(reg);
@ -2133,29 +1971,13 @@ static int gpr32_get_common(struct task_struct *target,
static int gpr32_set_common(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf, bool tm_active)
const void *kbuf, const void __user *ubuf,
unsigned long *regs)
{
unsigned long *regs = &target->thread.regs->gpr[0];
unsigned long *ckpt_regs;
const compat_ulong_t *k = kbuf;
const compat_ulong_t __user *u = ubuf;
compat_ulong_t reg;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
ckpt_regs = &target->thread.ckpt_regs.gpr[0];
#endif
if (tm_active) {
regs = ckpt_regs;
} else {
regs = &target->thread.regs->gpr[0];
if (target->thread.regs == NULL)
return -EIO;
CHECK_FULL_REGS(target->thread.regs);
}
pos /= sizeof(reg);
count /= sizeof(reg);
@ -2220,7 +2042,8 @@ static int tm_cgpr32_get(struct task_struct *target,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
return gpr32_get_common(target, regset, pos, count, kbuf, ubuf, 1);
return gpr32_get_common(target, regset, pos, count, kbuf, ubuf,
&target->thread.ckpt_regs.gpr[0]);
}
static int tm_cgpr32_set(struct task_struct *target,
@ -2228,7 +2051,8 @@ static int tm_cgpr32_set(struct task_struct *target,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
return gpr32_set_common(target, regset, pos, count, kbuf, ubuf, 1);
return gpr32_set_common(target, regset, pos, count, kbuf, ubuf,
&target->thread.ckpt_regs.gpr[0]);
}
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
@ -2237,7 +2061,21 @@ static int gpr32_get(struct task_struct *target,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
return gpr32_get_common(target, regset, pos, count, kbuf, ubuf, 0);
int i;
if (target->thread.regs == NULL)
return -EIO;
if (!FULL_REGS(target->thread.regs)) {
/*
* We have a partial register set.
* Fill 14-31 with bogus values.
*/
for (i = 14; i < 32; i++)
target->thread.regs->gpr[i] = NV_REG_POISON;
}
return gpr32_get_common(target, regset, pos, count, kbuf, ubuf,
&target->thread.regs->gpr[0]);
}
static int gpr32_set(struct task_struct *target,
@ -2245,7 +2083,12 @@ static int gpr32_set(struct task_struct *target,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
return gpr32_set_common(target, regset, pos, count, kbuf, ubuf, 0);
if (target->thread.regs == NULL)
return -EIO;
CHECK_FULL_REGS(target->thread.regs);
return gpr32_set_common(target, regset, pos, count, kbuf, ubuf,
&target->thread.regs->gpr[0]);
}
/*

41
arch/powerpc/kernel/signal.c
View file

@ -99,22 +99,24 @@ static void check_syscall_restart(struct pt_regs *regs, struct k_sigaction *ka,
}
}
static void do_signal(struct pt_regs *regs)
static void do_signal(struct task_struct *tsk)
{
sigset_t *oldset = sigmask_to_save();
struct ksignal ksig;
int ret;
int is32 = is_32bit_task();
BUG_ON(tsk != current);
get_signal(&ksig);
/* Is there any syscall restart business here ? */
check_syscall_restart(regs, &ksig.ka, ksig.sig > 0);
check_syscall_restart(tsk->thread.regs, &ksig.ka, ksig.sig > 0);
if (ksig.sig <= 0) {
/* No signal to deliver -- put the saved sigmask back */
restore_saved_sigmask();
regs->trap = 0;
tsk->thread.regs->trap = 0;
return; /* no signals delivered */
}
@ -124,23 +126,22 @@ static void do_signal(struct pt_regs *regs)
* user space. The DABR will have been cleared if it
* triggered inside the kernel.
*/
if (current->thread.hw_brk.address &&
current->thread.hw_brk.type)
__set_breakpoint(&current->thread.hw_brk);
if (tsk->thread.hw_brk.address && tsk->thread.hw_brk.type)
__set_breakpoint(&tsk->thread.hw_brk);
#endif
/* Re-enable the breakpoints for the signal stack */
thread_change_pc(current, regs);
thread_change_pc(tsk, tsk->thread.regs);
if (is32) {
if (ksig.ka.sa.sa_flags & SA_SIGINFO)
ret = handle_rt_signal32(&ksig, oldset, regs);
ret = handle_rt_signal32(&ksig, oldset, tsk);
else
ret = handle_signal32(&ksig, oldset, regs);
ret = handle_signal32(&ksig, oldset, tsk);
} else {
ret = handle_rt_signal64(&ksig, oldset, regs);
ret = handle_rt_signal64(&ksig, oldset, tsk);
}
regs->trap = 0;
tsk->thread.regs->trap = 0;
signal_setup_done(ret, &ksig, test_thread_flag(TIF_SINGLESTEP));
}
@ -151,8 +152,10 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
if (thread_info_flags & _TIF_UPROBE)
uprobe_notify_resume(regs);
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
if (thread_info_flags & _TIF_SIGPENDING) {
BUG_ON(regs != current->thread.regs);
do_signal(current);
}
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
clear_thread_flag(TIF_NOTIFY_RESUME);
@ -162,7 +165,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
user_enter();
}
unsigned long get_tm_stackpointer(struct pt_regs *regs)
unsigned long get_tm_stackpointer(struct task_struct *tsk)
{
/* When in an active transaction that takes a signal, we need to be
* careful with the stack. It's possible that the stack has moved back
@ -187,11 +190,13 @@ unsigned long get_tm_stackpointer(struct pt_regs *regs)
*/
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (MSR_TM_ACTIVE(regs->msr)) {
BUG_ON(tsk != current);
if (MSR_TM_ACTIVE(tsk->thread.regs->msr)) {
tm_reclaim_current(TM_CAUSE_SIGNAL);
if (MSR_TM_TRANSACTIONAL(regs->msr))
return current->thread.ckpt_regs.gpr[1];
if (MSR_TM_TRANSACTIONAL(tsk->thread.regs->msr))
return tsk->thread.ckpt_regs.gpr[1];
}
#endif
return regs->gpr[1];
return tsk->thread.regs->gpr[1];
}

18
arch/powerpc/kernel/signal.h
View file

@ -16,39 +16,41 @@ extern void __user *get_sigframe(struct ksignal *ksig, unsigned long sp,
size_t frame_size, int is_32);
extern int handle_signal32(struct ksignal *ksig, sigset_t *oldset,
struct pt_regs *regs);
struct task_struct *tsk);
extern int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset,
struct pt_regs *regs);
struct task_struct *tsk);
extern unsigned long copy_fpr_to_user(void __user *to,
struct task_struct *task);
extern unsigned long copy_transact_fpr_to_user(void __user *to,
extern unsigned long copy_ckfpr_to_user(void __user *to,
struct task_struct *task);
extern unsigned long copy_fpr_from_user(struct task_struct *task,
void __user *from);
extern unsigned long copy_transact_fpr_from_user(struct task_struct *task,
extern unsigned long copy_ckfpr_from_user(struct task_struct *task,
void __user *from);
extern unsigned long get_tm_stackpointer(struct task_struct *tsk);
#ifdef CONFIG_VSX
extern unsigned long copy_vsx_to_user(void __user *to,
struct task_struct *task);
extern unsigned long copy_transact_vsx_to_user(void __user *to,
extern unsigned long copy_ckvsx_to_user(void __user *to,
struct task_struct *task);
extern unsigned long copy_vsx_from_user(struct task_struct *task,
void __user *from);
extern unsigned long copy_transact_vsx_from_user(struct task_struct *task,
extern unsigned long copy_ckvsx_from_user(struct task_struct *task,
void __user *from);
#endif
#ifdef CONFIG_PPC64
extern int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
struct pt_regs *regs);
struct task_struct *tsk);
#else /* CONFIG_PPC64 */
static inline int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
struct pt_regs *regs)
struct task_struct *tsk)
{
return -EFAULT;
}

122
arch/powerpc/kernel/signal_32.c
View file

@ -44,6 +44,7 @@
#include <asm/vdso.h>
#include <asm/switch_to.h>
#include <asm/tm.h>
#include <asm/asm-prototypes.h>
#ifdef CONFIG_PPC64
#include "ppc32.h"
#include <asm/unistd.h>
@ -315,7 +316,7 @@ unsigned long copy_vsx_from_user(struct task_struct *task,
}
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
unsigned long copy_transact_fpr_to_user(void __user *to,
unsigned long copy_ckfpr_to_user(void __user *to,
struct task_struct *task)
{
u64 buf[ELF_NFPREG];
@ -323,12 +324,12 @@ unsigned long copy_transact_fpr_to_user(void __user *to,
/* save FPR copy to local buffer then write to the thread_struct */
for (i = 0; i < (ELF_NFPREG - 1) ; i++)
buf[i] = task->thread.TS_TRANS_FPR(i);
buf[i] = task->thread.transact_fp.fpscr;
buf[i] = task->thread.TS_CKFPR(i);
buf[i] = task->thread.ckfp_state.fpscr;
return __copy_to_user(to, buf, ELF_NFPREG * sizeof(double));
}
unsigned long copy_transact_fpr_from_user(struct task_struct *task,
unsigned long copy_ckfpr_from_user(struct task_struct *task,
void __user *from)
{
u64 buf[ELF_NFPREG];
@ -337,13 +338,13 @@ unsigned long copy_transact_fpr_from_user(struct task_struct *task,
if (__copy_from_user(buf, from, ELF_NFPREG * sizeof(double)))
return 1;
for (i = 0; i < (ELF_NFPREG - 1) ; i++)
task->thread.TS_TRANS_FPR(i) = buf[i];
task->thread.transact_fp.fpscr = buf[i];
task->thread.TS_CKFPR(i) = buf[i];
task->thread.ckfp_state.fpscr = buf[i];
return 0;
}
unsigned long copy_transact_vsx_to_user(void __user *to,
unsigned long copy_ckvsx_to_user(void __user *to,
struct task_struct *task)
{
u64 buf[ELF_NVSRHALFREG];
@ -351,11 +352,11 @@ unsigned long copy_transact_vsx_to_user(void __user *to,
/* save FPR copy to local buffer then write to the thread_struct */
for (i = 0; i < ELF_NVSRHALFREG; i++)
buf[i] = task->thread.transact_fp.fpr[i][TS_VSRLOWOFFSET];
buf[i] = task->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET];
return __copy_to_user(to, buf, ELF_NVSRHALFREG * sizeof(double));
}
unsigned long copy_transact_vsx_from_user(struct task_struct *task,
unsigned long copy_ckvsx_from_user(struct task_struct *task,
void __user *from)
{
u64 buf[ELF_NVSRHALFREG];
@ -364,7 +365,7 @@ unsigned long copy_transact_vsx_from_user(struct task_struct *task,
if (__copy_from_user(buf, from, ELF_NVSRHALFREG * sizeof(double)))
return 1;
for (i = 0; i < ELF_NVSRHALFREG ; i++)
task->thread.transact_fp.fpr[i][TS_VSRLOWOFFSET] = buf[i];
task->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i];
return 0;
}
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
@ -384,17 +385,17 @@ inline unsigned long copy_fpr_from_user(struct task_struct *task,
}
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
inline unsigned long copy_transact_fpr_to_user(void __user *to,
inline unsigned long copy_ckfpr_to_user(void __user *to,
struct task_struct *task)
{
return __copy_to_user(to, task->thread.transact_fp.fpr,
return __copy_to_user(to, task->thread.ckfp_state.fpr,
ELF_NFPREG * sizeof(double));
}
inline unsigned long copy_transact_fpr_from_user(struct task_struct *task,
inline unsigned long copy_ckfpr_from_user(struct task_struct *task,
void __user *from)
{
return __copy_from_user(task->thread.transact_fp.fpr, from,
return __copy_from_user(task->thread.ckfp_state.fpr, from,
ELF_NFPREG * sizeof(double));
}
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
@ -525,9 +526,6 @@ static int save_tm_user_regs(struct pt_regs *regs,
*/
regs->msr &= ~MSR_TS_MASK;
/* Make sure floating point registers are stored in regs */
flush_fp_to_thread(current);
/* Save both sets of general registers */
if (save_general_regs(&current->thread.ckpt_regs, frame)
|| save_general_regs(regs, tm_frame))
@ -545,18 +543,17 @@ static int save_tm_user_regs(struct pt_regs *regs,
#ifdef CONFIG_ALTIVEC
/* save altivec registers */
if (current->thread.used_vr) {
flush_altivec_to_thread(current);
if (__copy_to_user(&frame->mc_vregs, &current->thread.vr_state,
if (__copy_to_user(&frame->mc_vregs, &current->thread.ckvr_state,
ELF_NVRREG * sizeof(vector128)))
return 1;
if (msr & MSR_VEC) {
if (__copy_to_user(&tm_frame->mc_vregs,
&current->thread.transact_vr,
&current->thread.vr_state,
ELF_NVRREG * sizeof(vector128)))
return 1;
} else {
if (__copy_to_user(&tm_frame->mc_vregs,
&current->thread.vr_state,
&current->thread.ckvr_state,
ELF_NVRREG * sizeof(vector128)))
return 1;
}
@ -573,28 +570,28 @@ static int save_tm_user_regs(struct pt_regs *regs,
* most significant bits of that same vector. --BenH
*/
if (cpu_has_feature(CPU_FTR_ALTIVEC))
current->thread.vrsave = mfspr(SPRN_VRSAVE);
if (__put_user(current->thread.vrsave,
current->thread.ckvrsave = mfspr(SPRN_VRSAVE);
if (__put_user(current->thread.ckvrsave,
(u32 __user *)&frame->mc_vregs[32]))
return 1;
if (msr & MSR_VEC) {
if (__put_user(current->thread.transact_vrsave,
if (__put_user(current->thread.vrsave,
(u32 __user *)&tm_frame->mc_vregs[32]))
return 1;
} else {
if (__put_user(current->thread.vrsave,
if (__put_user(current->thread.ckvrsave,
(u32 __user *)&tm_frame->mc_vregs[32]))
return 1;
}
#endif /* CONFIG_ALTIVEC */
if (copy_fpr_to_user(&frame->mc_fregs, current))
if (copy_ckfpr_to_user(&frame->mc_fregs, current))
return 1;
if (msr & MSR_FP) {
if (copy_transact_fpr_to_user(&tm_frame->mc_fregs, current))
if (copy_fpr_to_user(&tm_frame->mc_fregs, current))
return 1;
} else {
if (copy_fpr_to_user(&tm_frame->mc_fregs, current))
if (copy_ckfpr_to_user(&tm_frame->mc_fregs, current))
return 1;
}
@ -606,15 +603,14 @@ static int save_tm_user_regs(struct pt_regs *regs,
* contains valid data
*/
if (current->thread.used_vsr) {
flush_vsx_to_thread(current);
if (copy_vsx_to_user(&frame->mc_vsregs, current))
if (copy_ckvsx_to_user(&frame->mc_vsregs, current))
return 1;
if (msr & MSR_VSX) {
if (copy_transact_vsx_to_user(&tm_frame->mc_vsregs,
if (copy_vsx_to_user(&tm_frame->mc_vsregs,
current))
return 1;
} else {
if (copy_vsx_to_user(&tm_frame->mc_vsregs, current))
if (copy_ckvsx_to_user(&tm_frame->mc_vsregs, current))
return 1;
}
@ -698,6 +694,7 @@ static long restore_user_regs(struct pt_regs *regs,
if (__copy_from_user(&current->thread.vr_state, &sr->mc_vregs,
sizeof(sr->mc_vregs)))
return 1;
current->thread.used_vr = true;
} else if (current->thread.used_vr)
memset(&current->thread.vr_state, 0,
ELF_NVRREG * sizeof(vector128));
@ -724,6 +721,7 @@ static long restore_user_regs(struct pt_regs *regs,
*/
if (copy_vsx_from_user(current, &sr->mc_vsregs))
return 1;
current->thread.used_vsr = true;
} else if (current->thread.used_vsr)
for (i = 0; i < 32 ; i++)
current->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
@ -743,6 +741,7 @@ static long restore_user_regs(struct pt_regs *regs,
if (__copy_from_user(current->thread.evr, &sr->mc_vregs,
ELF_NEVRREG * sizeof(u32)))
return 1;
current->thread.used_spe = true;
} else if (current->thread.used_spe)
memset(current->thread.evr, 0, ELF_NEVRREG * sizeof(u32));
@ -793,33 +792,34 @@ static long restore_tm_user_regs(struct pt_regs *regs,
regs->msr &= ~MSR_VEC;
if (msr & MSR_VEC) {
/* restore altivec registers from the stack */
if (__copy_from_user(&current->thread.vr_state, &sr->mc_vregs,
if (__copy_from_user(&current->thread.ckvr_state, &sr->mc_vregs,
sizeof(sr->mc_vregs)) ||
__copy_from_user(&current->thread.transact_vr,
__copy_from_user(&current->thread.vr_state,
&tm_sr->mc_vregs,
sizeof(sr->mc_vregs)))
return 1;
current->thread.used_vr = true;
} else if (current->thread.used_vr) {
memset(&current->thread.vr_state, 0,
ELF_NVRREG * sizeof(vector128));
memset(&current->thread.transact_vr, 0,
memset(&current->thread.ckvr_state, 0,
ELF_NVRREG * sizeof(vector128));
}
/* Always get VRSAVE back */
if (__get_user(current->thread.vrsave,
if (__get_user(current->thread.ckvrsave,
(u32 __user *)&sr->mc_vregs[32]) ||
__get_user(current->thread.transact_vrsave,
__get_user(current->thread.vrsave,
(u32 __user *)&tm_sr->mc_vregs[32]))
return 1;
if (cpu_has_feature(CPU_FTR_ALTIVEC))
mtspr(SPRN_VRSAVE, current->thread.vrsave);
mtspr(SPRN_VRSAVE, current->thread.ckvrsave);
#endif /* CONFIG_ALTIVEC */
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1);
if (copy_fpr_from_user(current, &sr->mc_fregs) ||
copy_transact_fpr_from_user(current, &tm_sr->mc_fregs))
copy_ckfpr_from_user(current, &tm_sr->mc_fregs))
return 1;
#ifdef CONFIG_VSX
@ -829,13 +829,14 @@ static long restore_tm_user_regs(struct pt_regs *regs,
* Restore altivec registers from the stack to a local
* buffer, then write this out to the thread_struct
*/
if (copy_vsx_from_user(current, &sr->mc_vsregs) ||
copy_transact_vsx_from_user(current, &tm_sr->mc_vsregs))
if (copy_vsx_from_user(current, &tm_sr->mc_vsregs) ||
copy_ckvsx_from_user(current, &sr->mc_vsregs))
return 1;
current->thread.used_vsr = true;
} else if (current->thread.used_vsr)
for (i = 0; i < 32 ; i++) {
current->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
current->thread.transact_fp.fpr[i][TS_VSRLOWOFFSET] = 0;
current->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
}
#endif /* CONFIG_VSX */
@ -848,6 +849,7 @@ static long restore_tm_user_regs(struct pt_regs *regs,
if (__copy_from_user(current->thread.evr, &sr->mc_vregs,
ELF_NEVRREG * sizeof(u32)))
return 1;
current->thread.used_spe = true;
} else if (current->thread.used_spe)
memset(current->thread.evr, 0, ELF_NEVRREG * sizeof(u32));
@ -877,13 +879,14 @@ static long restore_tm_user_regs(struct pt_regs *regs,
tm_recheckpoint(&current->thread, msr);
/* This loads the speculative FP/VEC state, if used */
msr_check_and_set(msr & (MSR_FP | MSR_VEC));
if (msr & MSR_FP) {
do_load_up_transact_fpu(&current->thread);
load_fp_state(&current->thread.fp_state);
regs->msr |= (MSR_FP | current->thread.fpexc_mode);
}
#ifdef CONFIG_ALTIVEC
if (msr & MSR_VEC) {
do_load_up_transact_altivec(&current->thread);
load_vr_state(&current->thread.vr_state);
regs->msr |= MSR_VEC;
}
#endif
@ -971,7 +974,7 @@ int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
* (one which gets siginfo).
*/
int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset,
struct pt_regs *regs)
struct task_struct *tsk)
{
struct rt_sigframe __user *rt_sf;
struct mcontext __user *frame;
@ -980,10 +983,13 @@ int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset,
unsigned long newsp = 0;
int sigret;
unsigned long tramp;
struct pt_regs *regs = tsk->thread.regs;
BUG_ON(tsk != current);
/* Set up Signal Frame */
/* Put a Real Time Context onto stack */
rt_sf = get_sigframe(ksig, get_tm_stackpointer(regs), sizeof(*rt_sf), 1);
rt_sf = get_sigframe(ksig, get_tm_stackpointer(tsk), sizeof(*rt_sf), 1);
addr = rt_sf;
if (unlikely(rt_sf == NULL))
goto badframe;
@ -1000,9 +1006,9 @@ int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset,
/* Save user registers on the stack */
frame = &rt_sf->uc.uc_mcontext;
addr = frame;
if (vdso32_rt_sigtramp && current->mm->context.vdso_base) {
if (vdso32_rt_sigtramp && tsk->mm->context.vdso_base) {
sigret = 0;
tramp = current->mm->context.vdso_base + vdso32_rt_sigtramp;
tramp = tsk->mm->context.vdso_base + vdso32_rt_sigtramp;
} else {
sigret = __NR_rt_sigreturn;
tramp = (unsigned long) frame->tramp;
@ -1029,7 +1035,7 @@ int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset,
}
regs->link = tramp;
current->thread.fp_state.fpscr = 0; /* turn off all fp exceptions */
tsk->thread.fp_state.fpscr = 0; /* turn off all fp exceptions */
/* create a stack frame for the caller of the handler */
newsp = ((unsigned long)rt_sf) - (__SIGNAL_FRAMESIZE + 16);
@ -1054,7 +1060,7 @@ int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset,
printk_ratelimited(KERN_INFO
"%s[%d]: bad frame in handle_rt_signal32: "
"%p nip %08lx lr %08lx\n",
current->comm, current->pid,
tsk->comm, tsk->pid,
addr, regs->nip, regs->link);
return 1;
@ -1410,7 +1416,8 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
/*
* OK, we're invoking a handler
*/
int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs)
int handle_signal32(struct ksignal *ksig, sigset_t *oldset,
struct task_struct *tsk)
{
struct sigcontext __user *sc;
struct sigframe __user *frame;
@ -1418,9 +1425,12 @@ int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs
unsigned long newsp = 0;
int sigret;
unsigned long tramp;
struct pt_regs *regs = tsk->thread.regs;
BUG_ON(tsk != current);
/* Set up Signal Frame */
frame = get_sigframe(ksig, get_tm_stackpointer(regs), sizeof(*frame), 1);
frame = get_sigframe(ksig, get_tm_stackpointer(tsk), sizeof(*frame), 1);
if (unlikely(frame == NULL))
goto badframe;
sc = (struct sigcontext __user *) &frame->sctx;
@ -1439,9 +1449,9 @@ int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs
|| __put_user(ksig->sig, &sc->signal))
goto badframe;
if (vdso32_sigtramp && current->mm->context.vdso_base) {
if (vdso32_sigtramp && tsk->mm->context.vdso_base) {
sigret = 0;
tramp = current->mm->context.vdso_base + vdso32_sigtramp;
tramp = tsk->mm->context.vdso_base + vdso32_sigtramp;
} else {
sigret = __NR_sigreturn;
tramp = (unsigned long) frame->mctx.tramp;
@ -1463,7 +1473,7 @@ int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs
regs->link = tramp;
current->thread.fp_state.fpscr = 0; /* turn off all fp exceptions */
tsk->thread.fp_state.fpscr = 0; /* turn off all fp exceptions */
/* create a stack frame for the caller of the handler */
newsp = ((unsigned long)frame) - __SIGNAL_FRAMESIZE;
@ -1483,7 +1493,7 @@ int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs
printk_ratelimited(KERN_INFO
"%s[%d]: bad frame in handle_signal32: "
"%p nip %08lx lr %08lx\n",
current->comm, current->pid,
tsk->comm, tsk->pid,
frame, regs->nip, regs->link);
return 1;

207
arch/powerpc/kernel/signal_64.c
View file

@ -35,6 +35,7 @@
#include <asm/vdso.h>
#include <asm/switch_to.h>
#include <asm/tm.h>
#include <asm/asm-prototypes.h>
#include "signal.h"
@ -90,9 +91,9 @@ static elf_vrreg_t __user *sigcontext_vmx_regs(struct sigcontext __user *sc)
* Set up the sigcontext for the signal frame.
*/
static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
int signr, sigset_t *set, unsigned long handler,
int ctx_has_vsx_region)
static long setup_sigcontext(struct sigcontext __user *sc,
struct task_struct *tsk, int signr, sigset_t *set,
unsigned long handler, int ctx_has_vsx_region)
{
/* When CONFIG_ALTIVEC is set, we _always_ setup v_regs even if the
* process never used altivec yet (MSR_VEC is zero in pt_regs of
@ -106,17 +107,20 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
elf_vrreg_t __user *v_regs = sigcontext_vmx_regs(sc);
unsigned long vrsave;
#endif
struct pt_regs *regs = tsk->thread.regs;
unsigned long msr = regs->msr;
long err = 0;
BUG_ON(tsk != current);
#ifdef CONFIG_ALTIVEC
err |= __put_user(v_regs, &sc->v_regs);
/* save altivec registers */
if (current->thread.used_vr) {
flush_altivec_to_thread(current);
if (tsk->thread.used_vr) {
flush_altivec_to_thread(tsk);
/* Copy 33 vec registers (vr0..31 and vscr) to the stack */
err |= __copy_to_user(v_regs, &current->thread.vr_state,
err |= __copy_to_user(v_regs, &tsk->thread.vr_state,
33 * sizeof(vector128));
/* set MSR_VEC in the MSR value in the frame to indicate that sc->v_reg)
* contains valid data.
@ -129,16 +133,16 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
vrsave = 0;
if (cpu_has_feature(CPU_FTR_ALTIVEC)) {
vrsave = mfspr(SPRN_VRSAVE);
current->thread.vrsave = vrsave;
tsk->thread.vrsave = vrsave;
}
err |= __put_user(vrsave, (u32 __user *)&v_regs[33]);
#else /* CONFIG_ALTIVEC */
err |= __put_user(0, &sc->v_regs);
#endif /* CONFIG_ALTIVEC */
flush_fp_to_thread(current);
flush_fp_to_thread(tsk);
/* copy fpr regs and fpscr */
err |= copy_fpr_to_user(&sc->fp_regs, current);
err |= copy_fpr_to_user(&sc->fp_regs, tsk);
/*
* Clear the MSR VSX bit to indicate there is no valid state attached
@ -151,10 +155,10 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
* then out to userspace. Update v_regs to point after the
* VMX data.
*/
if (current->thread.used_vsr && ctx_has_vsx_region) {
flush_vsx_to_thread(current);
if (tsk->thread.used_vsr && ctx_has_vsx_region) {
flush_vsx_to_thread(tsk);
v_regs += ELF_NVRREG;
err |= copy_vsx_to_user(v_regs, current);
err |= copy_vsx_to_user(v_regs, tsk);
/* set MSR_VSX in the MSR value in the frame to
* indicate that sc->vs_reg) contains valid data.
*/
@ -187,7 +191,7 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
*/
static long setup_tm_sigcontexts(struct sigcontext __user *sc,
struct sigcontext __user *tm_sc,
struct pt_regs *regs,
struct task_struct *tsk,
int signr, sigset_t *set, unsigned long handler)
{
/* When CONFIG_ALTIVEC is set, we _always_ setup v_regs even if the
@ -202,9 +206,12 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
elf_vrreg_t __user *v_regs = sigcontext_vmx_regs(sc);
elf_vrreg_t __user *tm_v_regs = sigcontext_vmx_regs(tm_sc);
#endif
unsigned long msr = regs->msr;
struct pt_regs *regs = tsk->thread.regs;
unsigned long msr = tsk->thread.ckpt_regs.msr;
long err = 0;
BUG_ON(tsk != current);
BUG_ON(!MSR_TM_ACTIVE(regs->msr));
/* Remove TM bits from thread's MSR. The MSR in the sigcontext
@ -214,28 +221,25 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
*/
regs->msr &= ~MSR_TS_MASK;
flush_fp_to_thread(current);
#ifdef CONFIG_ALTIVEC
err |= __put_user(v_regs, &sc->v_regs);
err |= __put_user(tm_v_regs, &tm_sc->v_regs);
/* save altivec registers */
if (current->thread.used_vr) {
flush_altivec_to_thread(current);
if (tsk->thread.used_vr) {
/* Copy 33 vec registers (vr0..31 and vscr) to the stack */
err |= __copy_to_user(v_regs, &current->thread.vr_state,
err |= __copy_to_user(v_regs, &tsk->thread.ckvr_state,
33 * sizeof(vector128));
/* If VEC was enabled there are transactional VRs valid too,
* else they're a copy of the checkpointed VRs.
*/
if (msr & MSR_VEC)
err |= __copy_to_user(tm_v_regs,
&current->thread.transact_vr,
&tsk->thread.vr_state,
33 * sizeof(vector128));
else
err |= __copy_to_user(tm_v_regs,
&current->thread.vr_state,
&tsk->thread.ckvr_state,
33 * sizeof(vector128));
/* set MSR_VEC in the MSR value in the frame to indicate
@ -247,13 +251,13 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
* use altivec.
*/
if (cpu_has_feature(CPU_FTR_ALTIVEC))
current->thread.vrsave = mfspr(SPRN_VRSAVE);
err |= __put_user(current->thread.vrsave, (u32 __user *)&v_regs[33]);
tsk->thread.ckvrsave = mfspr(SPRN_VRSAVE);
err |= __put_user(tsk->thread.ckvrsave, (u32 __user *)&v_regs[33]);
if (msr & MSR_VEC)
err |= __put_user(current->thread.transact_vrsave,
err |= __put_user(tsk->thread.vrsave,
(u32 __user *)&tm_v_regs[33]);
else
err |= __put_user(current->thread.vrsave,
err |= __put_user(tsk->thread.ckvrsave,
(u32 __user *)&tm_v_regs[33]);
#else /* CONFIG_ALTIVEC */
@ -262,11 +266,11 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
#endif /* CONFIG_ALTIVEC */
/* copy fpr regs and fpscr */
err |= copy_fpr_to_user(&sc->fp_regs, current);
err |= copy_ckfpr_to_user(&sc->fp_regs, tsk);
if (msr & MSR_FP)
err |= copy_transact_fpr_to_user(&tm_sc->fp_regs, current);
err |= copy_fpr_to_user(&tm_sc->fp_regs, tsk);
else
err |= copy_fpr_to_user(&tm_sc->fp_regs, current);
err |= copy_ckfpr_to_user(&tm_sc->fp_regs, tsk);
#ifdef CONFIG_VSX
/*
@ -274,17 +278,16 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
* then out to userspace. Update v_regs to point after the
* VMX data.
*/
if (current->thread.used_vsr) {
flush_vsx_to_thread(current);
if (tsk->thread.used_vsr) {
v_regs += ELF_NVRREG;
tm_v_regs += ELF_NVRREG;
err |= copy_vsx_to_user(v_regs, current);
err |= copy_ckvsx_to_user(v_regs, tsk);
if (msr & MSR_VSX)
err |= copy_transact_vsx_to_user(tm_v_regs, current);
err |= copy_vsx_to_user(tm_v_regs, tsk);
else
err |= copy_vsx_to_user(tm_v_regs, current);
err |= copy_ckvsx_to_user(tm_v_regs, tsk);
/* set MSR_VSX in the MSR value in the frame to
* indicate that sc->vs_reg) contains valid data.
@ -298,7 +301,7 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
WARN_ON(!FULL_REGS(regs));
err |= __copy_to_user(&tm_sc->gp_regs, regs, GP_REGS_SIZE);
err |= __copy_to_user(&sc->gp_regs,
&current->thread.ckpt_regs, GP_REGS_SIZE);
&tsk->thread.ckpt_regs, GP_REGS_SIZE);
err |= __put_user(msr, &tm_sc->gp_regs[PT_MSR]);
err |= __put_user(msr, &sc->gp_regs[PT_MSR]);
err |= __put_user(signr, &sc->signal);
@ -314,7 +317,7 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
* Restore the sigcontext from the signal frame.
*/
static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
static long restore_sigcontext(struct task_struct *tsk, sigset_t *set, int sig,
struct sigcontext __user *sc)
{
#ifdef CONFIG_ALTIVEC
@ -323,10 +326,13 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
unsigned long err = 0;
unsigned long save_r13 = 0;
unsigned long msr;
struct pt_regs *regs = tsk->thread.regs;
#ifdef CONFIG_VSX
int i;
#endif
BUG_ON(tsk != current);
/* If this is not a signal return, we preserve the TLS in r13 */
if (!sig)
save_r13 = regs->gpr[13];
@ -356,7 +362,7 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
/*
* Force reload of FP/VEC.
* This has to be done before copying stuff into current->thread.fpr/vr
* This has to be done before copying stuff into tsk->thread.fpr/vr
* for the reasons explained in the previous comment.
*/
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC | MSR_VSX);
@ -368,21 +374,23 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
if (v_regs && !access_ok(VERIFY_READ, v_regs, 34 * sizeof(vector128)))
return -EFAULT;
/* Copy 33 vec registers (vr0..31 and vscr) from the stack */
if (v_regs != NULL && (msr & MSR_VEC) != 0)
err |= __copy_from_user(&current->thread.vr_state, v_regs,
if (v_regs != NULL && (msr & MSR_VEC) != 0) {
err |= __copy_from_user(&tsk->thread.vr_state, v_regs,
33 * sizeof(vector128));
else if (current->thread.used_vr)
memset(&current->thread.vr_state, 0, 33 * sizeof(vector128));
tsk->thread.used_vr = true;
} else if (tsk->thread.used_vr) {
memset(&tsk->thread.vr_state, 0, 33 * sizeof(vector128));
}
/* Always get VRSAVE back */
if (v_regs != NULL)
err |= __get_user(current->thread.vrsave, (u32 __user *)&v_regs[33]);
err |= __get_user(tsk->thread.vrsave, (u32 __user *)&v_regs[33]);
else
current->thread.vrsave = 0;
tsk->thread.vrsave = 0;
if (cpu_has_feature(CPU_FTR_ALTIVEC))
mtspr(SPRN_VRSAVE, current->thread.vrsave);
mtspr(SPRN_VRSAVE, tsk->thread.vrsave);
#endif /* CONFIG_ALTIVEC */
/* restore floating point */
err |= copy_fpr_from_user(current, &sc->fp_regs);
err |= copy_fpr_from_user(tsk, &sc->fp_regs);
#ifdef CONFIG_VSX
/*
* Get additional VSX data. Update v_regs to point after the
@ -390,11 +398,13 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
* buffer for formatting, then into the taskstruct.
*/
v_regs += ELF_NVRREG;
if ((msr & MSR_VSX) != 0)
err |= copy_vsx_from_user(current, v_regs);
else
if ((msr & MSR_VSX) != 0) {
err |= copy_vsx_from_user(tsk, v_regs);
tsk->thread.used_vsr = true;
} else {
for (i = 0; i < 32 ; i++)
current->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
tsk->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
}
#endif
return err;
}
@ -404,7 +414,7 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
* Restore the two sigcontexts from the frame of a transactional processes.
*/
static long restore_tm_sigcontexts(struct pt_regs *regs,
static long restore_tm_sigcontexts(struct task_struct *tsk,
struct sigcontext __user *sc,
struct sigcontext __user *tm_sc)
{
@ -413,12 +423,16 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
#endif
unsigned long err = 0;
unsigned long msr;
struct pt_regs *regs = tsk->thread.regs;
#ifdef CONFIG_VSX
int i;
#endif
BUG_ON(tsk != current);
/* copy the GPRs */
err |= __copy_from_user(regs->gpr, tm_sc->gp_regs, sizeof(regs->gpr));
err |= __copy_from_user(&current->thread.ckpt_regs, sc->gp_regs,
err |= __copy_from_user(&tsk->thread.ckpt_regs, sc->gp_regs,
sizeof(regs->gpr));
/*
@ -430,7 +444,7 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
* we don't need to re-copy them here.
*/
err |= __get_user(regs->nip, &tm_sc->gp_regs[PT_NIP]);
err |= __get_user(current->thread.tm_tfhar, &sc->gp_regs[PT_NIP]);
err |= __get_user(tsk->thread.tm_tfhar, &sc->gp_regs[PT_NIP]);
/* get MSR separately, transfer the LE bit if doing signal return */
err |= __get_user(msr, &sc->gp_regs[PT_MSR]);
@ -449,13 +463,13 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
err |= __get_user(regs->link, &tm_sc->gp_regs[PT_LNK]);
err |= __get_user(regs->xer, &tm_sc->gp_regs[PT_XER]);
err |= __get_user(regs->ccr, &tm_sc->gp_regs[PT_CCR]);
err |= __get_user(current->thread.ckpt_regs.ctr,
err |= __get_user(tsk->thread.ckpt_regs.ctr,
&sc->gp_regs[PT_CTR]);
err |= __get_user(current->thread.ckpt_regs.link,
err |= __get_user(tsk->thread.ckpt_regs.link,
&sc->gp_regs[PT_LNK]);
err |= __get_user(current->thread.ckpt_regs.xer,
err |= __get_user(tsk->thread.ckpt_regs.xer,
&sc->gp_regs[PT_XER]);
err |= __get_user(current->thread.ckpt_regs.ccr,
err |= __get_user(tsk->thread.ckpt_regs.ccr,
&sc->gp_regs[PT_CCR]);
/* These regs are not checkpointed; they can go in 'regs'. */
@ -466,7 +480,7 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
/*
* Force reload of FP/VEC.
* This has to be done before copying stuff into current->thread.fpr/vr
* This has to be done before copying stuff into tsk->thread.fpr/vr
* for the reasons explained in the previous comment.
*/
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC | MSR_VSX);
@ -483,32 +497,33 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
return -EFAULT;
/* Copy 33 vec registers (vr0..31 and vscr) from the stack */
if (v_regs != NULL && tm_v_regs != NULL && (msr & MSR_VEC) != 0) {
err |= __copy_from_user(&current->thread.vr_state, v_regs,
err |= __copy_from_user(&tsk->thread.ckvr_state, v_regs,
33 * sizeof(vector128));
err |= __copy_from_user(&current->thread.transact_vr, tm_v_regs,
err |= __copy_from_user(&tsk->thread.vr_state, tm_v_regs,
33 * sizeof(vector128));
current->thread.used_vr = true;
}
else if (current->thread.used_vr) {
memset(&current->thread.vr_state, 0, 33 * sizeof(vector128));
memset(&current->thread.transact_vr, 0, 33 * sizeof(vector128));
else if (tsk->thread.used_vr) {
memset(&tsk->thread.vr_state, 0, 33 * sizeof(vector128));
memset(&tsk->thread.ckvr_state, 0, 33 * sizeof(vector128));
}
/* Always get VRSAVE back */
if (v_regs != NULL && tm_v_regs != NULL) {
err |= __get_user(current->thread.vrsave,
err |= __get_user(tsk->thread.ckvrsave,
(u32 __user *)&v_regs[33]);
err |= __get_user(current->thread.transact_vrsave,
err |= __get_user(tsk->thread.vrsave,
(u32 __user *)&tm_v_regs[33]);
}
else {
current->thread.vrsave = 0;
current->thread.transact_vrsave = 0;
tsk->thread.vrsave = 0;
tsk->thread.ckvrsave = 0;
}
if (cpu_has_feature(CPU_FTR_ALTIVEC))
mtspr(SPRN_VRSAVE, current->thread.vrsave);
mtspr(SPRN_VRSAVE, tsk->thread.vrsave);
#endif /* CONFIG_ALTIVEC */
/* restore floating point */
err |= copy_fpr_from_user(current, &sc->fp_regs);
err |= copy_transact_fpr_from_user(current, &tm_sc->fp_regs);
err |= copy_fpr_from_user(tsk, &tm_sc->fp_regs);
err |= copy_ckfpr_from_user(tsk, &sc->fp_regs);
#ifdef CONFIG_VSX
/*
* Get additional VSX data. Update v_regs to point after the
@ -518,32 +533,31 @@ static long restore_tm_sigcontexts(struct pt_regs *regs,
if (v_regs && ((msr & MSR_VSX) != 0)) {
v_regs += ELF_NVRREG;
tm_v_regs += ELF_NVRREG;
err |= copy_vsx_from_user(current, v_regs);
err |= copy_transact_vsx_from_user(current, tm_v_regs);
err |= copy_vsx_from_user(tsk, tm_v_regs);
err |= copy_ckvsx_from_user(tsk, v_regs);
tsk->thread.used_vsr = true;
} else {
for (i = 0; i < 32 ; i++) {
current->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
current->thread.transact_fp.fpr[i][TS_VSRLOWOFFSET] = 0;
tsk->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
tsk->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
}
}
#endif
tm_enable();
/* Make sure the transaction is marked as failed */
current->thread.tm_texasr |= TEXASR_FS;
tsk->thread.tm_texasr |= TEXASR_FS;
/* This loads the checkpointed FP/VEC state, if used */
tm_recheckpoint(&current->thread, msr);
tm_recheckpoint(&tsk->thread, msr);
/* This loads the speculative FP/VEC state, if used */
msr_check_and_set(msr & (MSR_FP | MSR_VEC));
if (msr & MSR_FP) {
do_load_up_transact_fpu(&current->thread);
regs->msr |= (MSR_FP | current->thread.fpexc_mode);
load_fp_state(&tsk->thread.fp_state);
regs->msr |= (MSR_FP | tsk->thread.fpexc_mode);
}
#ifdef CONFIG_ALTIVEC
if (msr & MSR_VEC) {
do_load_up_transact_altivec(&current->thread);
load_vr_state(&tsk->thread.vr_state);
regs->msr |= MSR_VEC;
}
#endif
return err;
}
@ -594,6 +608,8 @@ int sys_swapcontext(struct ucontext __user *old_ctx,
unsigned long new_msr = 0;
int ctx_has_vsx_region = 0;
BUG_ON(regs != current->thread.regs);
if (new_ctx &&
get_user(new_msr, &new_ctx->uc_mcontext.gp_regs[PT_MSR]))
return -EFAULT;
@ -616,7 +632,7 @@ int sys_swapcontext(struct ucontext __user *old_ctx,
if (old_ctx != NULL) {
if (!access_ok(VERIFY_WRITE, old_ctx, ctx_size)
|| setup_sigcontext(&old_ctx->uc_mcontext, regs, 0, NULL, 0,
|| setup_sigcontext(&old_ctx->uc_mcontext, current, 0, NULL, 0,
ctx_has_vsx_region)
|| __copy_to_user(&old_ctx->uc_sigmask,
&current->blocked, sizeof(sigset_t)))
@ -644,7 +660,7 @@ int sys_swapcontext(struct ucontext __user *old_ctx,
if (__copy_from_user(&set, &new_ctx->uc_sigmask, sizeof(set)))
do_exit(SIGSEGV);
set_current_blocked(&set);
if (restore_sigcontext(regs, NULL, 0, &new_ctx->uc_mcontext))
if (restore_sigcontext(current, NULL, 0, &new_ctx->uc_mcontext))
do_exit(SIGSEGV);
/* This returns like rt_sigreturn */
@ -667,6 +683,8 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long msr;
#endif
BUG_ON(current->thread.regs != regs);
/* Always make any pending restarted system calls return -EINTR */
current->restart_block.fn = do_no_restart_syscall;
@ -698,14 +716,14 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
struct ucontext __user *uc_transact;
if (__get_user(uc_transact, &uc->uc_link))
goto badframe;
if (restore_tm_sigcontexts(regs, &uc->uc_mcontext,
if (restore_tm_sigcontexts(current, &uc->uc_mcontext,
&uc_transact->uc_mcontext))
goto badframe;
}
else
/* Fall through, for non-TM restore */
#endif
if (restore_sigcontext(regs, NULL, 1, &uc->uc_mcontext))
if (restore_sigcontext(current, NULL, 1, &uc->uc_mcontext))
goto badframe;
if (restore_altstack(&uc->uc_stack))
@ -724,13 +742,17 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
return 0;
}
int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
struct task_struct *tsk)
{
struct rt_sigframe __user *frame;
unsigned long newsp = 0;
long err = 0;
struct pt_regs *regs = tsk->thread.regs;
frame = get_sigframe(ksig, get_tm_stackpointer(regs), sizeof(*frame), 0);
BUG_ON(tsk != current);
frame = get_sigframe(ksig, get_tm_stackpointer(tsk), sizeof(*frame), 0);
if (unlikely(frame == NULL))
goto badframe;
@ -751,14 +773,13 @@ int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs
err |= __put_user(&frame->uc_transact, &frame->uc.uc_link);
err |= setup_tm_sigcontexts(&frame->uc.uc_mcontext,
&frame->uc_transact.uc_mcontext,
regs, ksig->sig,
NULL,
tsk, ksig->sig, NULL,
(unsigned long)ksig->ka.sa.sa_handler);
} else
#endif
{
err |= __put_user(0, &frame->uc.uc_link);
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, ksig->sig,
err |= setup_sigcontext(&frame->uc.uc_mcontext, tsk, ksig->sig,
NULL, (unsigned long)ksig->ka.sa.sa_handler,
1);
}
@ -767,11 +788,11 @@ int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs
goto badframe;
/* Make sure signal handler doesn't get spurious FP exceptions */
current->thread.fp_state.fpscr = 0;
tsk->thread.fp_state.fpscr = 0;
/* Set up to return from userspace. */
if (vdso64_rt_sigtramp && current->mm->context.vdso_base) {
regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp;
if (vdso64_rt_sigtramp && tsk->mm->context.vdso_base) {
regs->link = tsk->mm->context.vdso_base + vdso64_rt_sigtramp;
} else {
err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]);
if (err)
@ -821,7 +842,7 @@ int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs
badframe:
if (show_unhandled_signals)
printk_ratelimited(regs->msr & MSR_64BIT ? fmt64 : fmt32,
current->comm, current->pid, "setup_rt_frame",
tsk->comm, tsk->pid, "setup_rt_frame",
(long)frame, regs->nip, regs->link);
return 1;

1
arch/powerpc/kernel/syscalls.c
View file

@ -40,6 +40,7 @@
#include <asm/syscalls.h>
#include <asm/time.h>
#include <asm/unistd.h>
#include <asm/asm-prototypes.h>
static inline unsigned long do_mmap2(unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,

1
arch/powerpc/kernel/time.c
View file

@ -73,6 +73,7 @@
#include <asm/vdso_datapage.h>
#include <asm/firmware.h>
#include <asm/cputime.h>
#include <asm/asm-prototypes.h>
/* powerpc clocksource/clockevent code */

94
arch/powerpc/kernel/tm.S
View file

@ -108,6 +108,7 @@ _GLOBAL(tm_reclaim)
/* We've a struct pt_regs at [r1+STACK_FRAME_OVERHEAD]. */
std r3, STK_PARAM(R3)(r1)
std r4, STK_PARAM(R4)(r1)
SAVE_NVGPRS(r1)
/* We need to setup MSR for VSX register save instructions. */
@ -126,43 +127,6 @@ _GLOBAL(tm_reclaim)
mtmsrd r15
std r14, TM_FRAME_L0(r1)
/* Stash the stack pointer away for use after reclaim */
std r1, PACAR1(r13)
/* ******************** FPR/VR/VSRs ************
* Before reclaiming, capture the current/transactional FPR/VR
* versions /if used/.
*
* (If VSX used, FP and VMX are implied. Or, we don't need to look
* at MSR.VSX as copying FP regs if .FP, vector regs if .VMX covers it.)
*
* We're passed the thread's MSR as parameter 2.
*
* We enabled VEC/FP/VSX in the msr above, so we can execute these
* instructions!
*/
andis. r0, r4, MSR_VEC@h
beq dont_backup_vec
addi r7, r3, THREAD_TRANSACT_VRSTATE
SAVE_32VRS(0, r6, r7) /* r6 scratch, r7 transact vr state */
mfvscr v0
li r6, VRSTATE_VSCR
stvx v0, r7, r6
dont_backup_vec:
mfspr r0, SPRN_VRSAVE
std r0, THREAD_TRANSACT_VRSAVE(r3)
andi. r0, r4, MSR_FP
beq dont_backup_fp
addi r7, r3, THREAD_TRANSACT_FPSTATE
SAVE_32FPRS_VSRS(0, R6, R7) /* r6 scratch, r7 transact fp state */
mffs fr0
stfd fr0,FPSTATE_FPSCR(r7)
dont_backup_fp:
/* Do sanity check on MSR to make sure we are suspended */
li r7, (MSR_TS_S)@higher
srdi r6, r14, 32
@ -170,6 +134,9 @@ dont_backup_fp:
1: tdeqi r6, 0
EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0
/* Stash the stack pointer away for use after reclaim */
std r1, PACAR1(r13)
/* Clear MSR RI since we are about to change r1, EE is already off. */
li r4, 0
mtmsrd r4, 1
@ -273,6 +240,43 @@ dont_backup_fp:
* MSR.
*/
/* ******************** FPR/VR/VSRs ************
* After reclaiming, capture the checkpointed FPRs/VRs /if used/.
*
* (If VSX used, FP and VMX are implied. Or, we don't need to look
* at MSR.VSX as copying FP regs if .FP, vector regs if .VMX covers it.)
*
* We're passed the thread's MSR as the second parameter
*
* We enabled VEC/FP/VSX in the msr above, so we can execute these
* instructions!
*/
ld r4, STK_PARAM(R4)(r1) /* Second parameter, MSR * */
mr r3, r12
andis. r0, r4, MSR_VEC@h
beq dont_backup_vec
addi r7, r3, THREAD_CKVRSTATE
SAVE_32VRS(0, r6, r7) /* r6 scratch, r7 transact vr state */
mfvscr v0
li r6, VRSTATE_VSCR
stvx v0, r7, r6
dont_backup_vec:
mfspr r0, SPRN_VRSAVE
std r0, THREAD_CKVRSAVE(r3)
andi. r0, r4, MSR_FP
beq dont_backup_fp
addi r7, r3, THREAD_CKFPSTATE
SAVE_32FPRS_VSRS(0, R6, R7) /* r6 scratch, r7 transact fp state */
mffs fr0
stfd fr0,FPSTATE_FPSCR(r7)
dont_backup_fp:
/* TM regs, incl TEXASR -- these live in thread_struct. Note they've
* been updated by the treclaim, to explain to userland the failure
* cause (aborted).
@ -288,6 +292,7 @@ dont_backup_fp:
/* Restore original MSR/IRQ state & clear TM mode */
ld r14, TM_FRAME_L0(r1) /* Orig MSR */
li r15, 0
rldimi r14, r15, MSR_TS_LG, (63-MSR_TS_LG)-1
mtmsrd r14
@ -356,28 +361,29 @@ _GLOBAL(__tm_recheckpoint)
mtmsr r5
#ifdef CONFIG_ALTIVEC
/* FP and VEC registers: These are recheckpointed from thread.fpr[]
* and thread.vr[] respectively. The thread.transact_fpr[] version
* is more modern, and will be loaded subsequently by any FPUnavailable
* trap.
/*
* FP and VEC registers: These are recheckpointed from
* thread.ckfp_state and thread.ckvr_state respectively. The
* thread.fp_state[] version holds the 'live' (transactional)
* and will be loaded subsequently by any FPUnavailable trap.
*/
andis. r0, r4, MSR_VEC@h
beq dont_restore_vec
addi r8, r3, THREAD_VRSTATE
addi r8, r3, THREAD_CKVRSTATE
li r5, VRSTATE_VSCR
lvx v0, r8, r5
mtvscr v0
REST_32VRS(0, r5, r8) /* r5 scratch, r8 ptr */
dont_restore_vec:
ld r5, THREAD_VRSAVE(r3)
ld r5, THREAD_CKVRSAVE(r3)
mtspr SPRN_VRSAVE, r5
#endif
andi. r0, r4, MSR_FP
beq dont_restore_fp
addi r8, r3, THREAD_FPSTATE
addi r8, r3, THREAD_CKFPSTATE
lfd fr0, FPSTATE_FPSCR(r8)
MTFSF_L(fr0)
REST_32FPRS_VSRS(0, R4, R8)

83
arch/powerpc/kernel/traps.c
View file

@ -117,7 +117,7 @@ static int die_owner = -1;
static unsigned int die_nest_count;
static int die_counter;
static unsigned __kprobes long oops_begin(struct pt_regs *regs)
static unsigned long oops_begin(struct pt_regs *regs)
{
int cpu;
unsigned long flags;
@ -144,8 +144,9 @@ static unsigned __kprobes long oops_begin(struct pt_regs *regs)
pmac_backlight_unblank();
return flags;
}
NOKPROBE_SYMBOL(oops_begin);
static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs,
static void oops_end(unsigned long flags, struct pt_regs *regs,
int signr)
{
bust_spinlocks(0);
@ -196,8 +197,9 @@ static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs,
panic("Fatal exception");
do_exit(signr);
}
NOKPROBE_SYMBOL(oops_end);
static int __kprobes __die(const char *str, struct pt_regs *regs, long err)
static int __die(const char *str, struct pt_regs *regs, long err)
{
printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter);
#ifdef CONFIG_PREEMPT
@ -221,6 +223,7 @@ static int __kprobes __die(const char *str, struct pt_regs *regs, long err)
return 0;
}
NOKPROBE_SYMBOL(__die);
void die(const char *str, struct pt_regs *regs, long err)
{
@ -802,7 +805,7 @@ void RunModeException(struct pt_regs *regs)
_exception(SIGTRAP, regs, 0, 0);
}
void __kprobes single_step_exception(struct pt_regs *regs)
void single_step_exception(struct pt_regs *regs)
{
enum ctx_state prev_state = exception_enter();
@ -819,6 +822,7 @@ void __kprobes single_step_exception(struct pt_regs *regs)
bail:
exception_exit(prev_state);
}
NOKPROBE_SYMBOL(single_step_exception);
/*
* After we have successfully emulated an instruction, we have to
@ -1140,7 +1144,7 @@ static int emulate_math(struct pt_regs *regs)
static inline int emulate_math(struct pt_regs *regs) { return -1; }
#endif
void __kprobes program_check_exception(struct pt_regs *regs)
void program_check_exception(struct pt_regs *regs)
{
enum ctx_state prev_state = exception_enter();
unsigned int reason = get_reason(regs);
@ -1260,16 +1264,18 @@ void __kprobes program_check_exception(struct pt_regs *regs)
bail:
exception_exit(prev_state);
}
NOKPROBE_SYMBOL(program_check_exception);
/*
* This occurs when running in hypervisor mode on POWER6 or later
* and an illegal instruction is encountered.
*/
void __kprobes emulation_assist_interrupt(struct pt_regs *regs)
void emulation_assist_interrupt(struct pt_regs *regs)
{
regs->msr |= REASON_ILLEGAL;
program_check_exception(regs);
}
NOKPROBE_SYMBOL(emulation_assist_interrupt);
void alignment_exception(struct pt_regs *regs)
{
@ -1310,6 +1316,18 @@ void alignment_exception(struct pt_regs *regs)
exception_exit(prev_state);
}
void slb_miss_bad_addr(struct pt_regs *regs)
{
enum ctx_state prev_state = exception_enter();
if (user_mode(regs))
_exception(SIGSEGV, regs, SEGV_BNDERR, regs->dar);
else
bad_page_fault(regs, regs->dar, SIGSEGV);
exception_exit(prev_state);
}
void StackOverflow(struct pt_regs *regs)
{
printk(KERN_CRIT "Kernel stack overflow in process %p, r1=%lx\n",
@ -1372,6 +1390,22 @@ void vsx_unavailable_exception(struct pt_regs *regs)
}
#ifdef CONFIG_PPC64
static void tm_unavailable(struct pt_regs *regs)
{
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
if (user_mode(regs)) {
current->thread.load_tm++;
regs->msr |= MSR_TM;
tm_enable();
tm_restore_sprs(&current->thread);
return;
}
#endif
pr_emerg("Unrecoverable TM Unavailable Exception "
"%lx at %lx\n", regs->trap, regs->nip);
die("Unrecoverable TM Unavailable Exception", regs, SIGABRT);
}
void facility_unavailable_exception(struct pt_regs *regs)
{
static char *facility_strings[] = {
@ -1451,6 +1485,27 @@ void facility_unavailable_exception(struct pt_regs *regs)
return;
}
if (status == FSCR_TM_LG) {
/*
* If we're here then the hardware is TM aware because it
* generated an exception with FSRM_TM set.
*
* If cpu_has_feature(CPU_FTR_TM) is false, then either firmware
* told us not to do TM, or the kernel is not built with TM
* support.
*
* If both of those things are true, then userspace can spam the
* console by triggering the printk() below just by continually
* doing tbegin (or any TM instruction). So in that case just
* send the process a SIGILL immediately.
*/
if (!cpu_has_feature(CPU_FTR_TM))
goto out;
tm_unavailable(regs);
return;
}
if ((status < ARRAY_SIZE(facility_strings)) &&
facility_strings[status])
facility = facility_strings[status];
@ -1463,6 +1518,7 @@ void facility_unavailable_exception(struct pt_regs *regs)
"%sFacility '%s' unavailable, exception at 0x%lx, MSR=%lx\n",
hv ? "Hypervisor " : "", facility, regs->nip, regs->msr);
out:
if (user_mode(regs)) {
_exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
return;
@ -1504,7 +1560,8 @@ void fp_unavailable_tm(struct pt_regs *regs)
/* If VMX is in use, get the transactional values back */
if (regs->msr & MSR_VEC) {
do_load_up_transact_altivec(&current->thread);
msr_check_and_set(MSR_VEC);
load_vr_state(&current->thread.vr_state);
/* At this point all the VSX state is loaded, so enable it */
regs->msr |= MSR_VSX;
}
@ -1525,7 +1582,8 @@ void altivec_unavailable_tm(struct pt_regs *regs)
current->thread.used_vr = 1;
if (regs->msr & MSR_FP) {
do_load_up_transact_fpu(&current->thread);
msr_check_and_set(MSR_FP);
load_fp_state(&current->thread.fp_state);
regs->msr |= MSR_VSX;
}
}
@ -1564,10 +1622,12 @@ void vsx_unavailable_tm(struct pt_regs *regs)
*/
tm_recheckpoint(&current->thread, regs->msr & ~orig_msr);
msr_check_and_set(orig_msr & (MSR_FP | MSR_VEC));
if (orig_msr & MSR_FP)
do_load_up_transact_fpu(&current->thread);
load_fp_state(&current->thread.fp_state);
if (orig_msr & MSR_VEC)
do_load_up_transact_altivec(&current->thread);
load_vr_state(&current->thread.vr_state);
}
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
@ -1656,7 +1716,7 @@ static void handle_debug(struct pt_regs *regs, unsigned long debug_status)
mtspr(SPRN_DBCR0, current->thread.debug.dbcr0);
}
void __kprobes DebugException(struct pt_regs *regs, unsigned long debug_status)
void DebugException(struct pt_regs *regs, unsigned long debug_status)
{
current->thread.debug.dbsr = debug_status;
@ -1717,6 +1777,7 @@ void __kprobes DebugException(struct pt_regs *regs, unsigned long debug_status)
} else
handle_debug(regs, debug_status);
}
NOKPROBE_SYMBOL(DebugException);
#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
#if !defined(CONFIG_TAU_INT)

6
arch/powerpc/kernel/vdso64/Makefile
View file

@ -31,15 +31,9 @@ $(obj)/%.so: OBJCOPYFLAGS := -S
$(obj)/%.so: $(obj)/%.so.dbg FORCE
$(call if_changed,objcopy)
# assembly rules for the .S files
$(obj-vdso64): %.o: %.S FORCE
$(call if_changed_dep,vdso64as)
# actual build commands
quiet_cmd_vdso64ld = VDSO64L $@
cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)
quiet_cmd_vdso64as = VDSO64A $@
cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
# install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@

2
arch/powerpc/kernel/vdso64/datapage.S
View file

@ -59,7 +59,7 @@ V_FUNCTION_BEGIN(__kernel_get_syscall_map)
bl V_LOCAL_FUNC(__get_datapage)
mtlr r12
addi r3,r3,CFG_SYSCALL_MAP64
cmpli cr0,r4,0
cmpldi cr0,r4,0
crclr cr0*4+so
beqlr
li r0,NR_syscalls

2
arch/powerpc/kernel/vdso64/gettimeofday.S
View file

@ -145,7 +145,7 @@ V_FUNCTION_BEGIN(__kernel_clock_getres)
bne cr0,99f
li r3,0
cmpli cr0,r4,0
cmpldi cr0,r4,0
crclr cr0*4+so
beqlr
lis r5,CLOCK_REALTIME_RES@h

25
arch/powerpc/kernel/vector.S
View file

@ -7,31 +7,6 @@
#include <asm/page.h>
#include <asm/ptrace.h>
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/* void do_load_up_transact_altivec(struct thread_struct *thread)
*
* This is similar to load_up_altivec but for the transactional version of the
* vector regs. It doesn't mess with the task MSR or valid flags.
* Furthermore, VEC laziness is not supported with TM currently.
*/
_GLOBAL(do_load_up_transact_altivec)
mfmsr r6
oris r5,r6,MSR_VEC@h
MTMSRD(r5)
isync
li r4,1
stw r4,THREAD_USED_VR(r3)
li r10,THREAD_TRANSACT_VRSTATE+VRSTATE_VSCR
lvx v0,r10,r3
mtvscr v0
addi r10,r3,THREAD_TRANSACT_VRSTATE
REST_32VRS(0,r4,r10)
blr
#endif
/*
* Load state from memory into VMX registers including VSCR.
* Assumes the caller has enabled VMX in the MSR.

55
arch/powerpc/kernel/vmlinux.lds.S
View file

@ -44,11 +44,58 @@ SECTIONS
* Text, read only data and other permanent read-only sections
*/
/* Text and gots */
_text = .;
_stext = .;
/*
* Head text.
* This needs to be in its own output section to avoid ld placing
* branch trampoline stubs randomly throughout the fixed sections,
* which it will do (even if the branch comes from another section)
* in order to optimize stub generation.
*/
.head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
#ifdef CONFIG_PPC64
KEEP(*(.head.text.first_256B));
#ifdef CONFIG_PPC_BOOK3E
# define END_FIXED 0x100
#else
KEEP(*(.head.text.real_vectors));
*(.head.text.real_trampolines);
KEEP(*(.head.text.virt_vectors));
*(.head.text.virt_trampolines);
# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
KEEP(*(.head.data.fwnmi_page));
# define END_FIXED 0x8000
# else
# define END_FIXED 0x7000
# endif
#endif
ASSERT((. == END_FIXED), "vmlinux.lds.S: fixed section overflow error");
#else /* !CONFIG_PPC64 */
HEAD_TEXT
#endif
} :kernel
/*
* If the build dies here, it's likely code in head_64.S is referencing
* labels it can't reach, and the linker inserting stubs without the
* assembler's knowledge. To debug, remove the above assert and
* rebuild. Look for branch stubs in the fixed section region.
*
* Linker stub generation could be allowed in "trampoline"
* sections if absolutely necessary, but this would require
* some rework of the fixed sections. Before resorting to this,
* consider references that have sufficient addressing range,
* (e.g., hand coded trampolines) so the linker does not have
* to add stubs.
*
* Linker stubs at the top of the main text section are currently not
* detected, and will result in a crash at boot due to offsets being
* wrong.
*/
.text : AT(ADDR(.text) - LOAD_OFFSET) {
ALIGN_FUNCTION();
HEAD_TEXT
_text = .;
/* careful! __ftr_alt_* sections need to be close to .text */
*(.text .fixup __ftr_alt_* .ref.text)
SCHED_TEXT
@ -56,6 +103,8 @@ SECTIONS
KPROBES_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
MEM_KEEP(init.text)
MEM_KEEP(exit.text)
#ifdef CONFIG_PPC32
*(.got1)

2
arch/powerpc/lib/Makefile
View file

@ -22,7 +22,7 @@ obj64-$(CONFIG_SMP) += locks.o
obj64-$(CONFIG_ALTIVEC) += vmx-helper.o
ifeq ($(CONFIG_GENERIC_CSUM),)
obj-y += checksum_$(CONFIG_WORD_SIZE).o checksum_wrappers.o
obj-y += checksum_$(BITS).o checksum_wrappers.o
endif
obj-$(CONFIG_PPC_EMULATE_SSTEP) += sstep.o ldstfp.o

2
arch/powerpc/lib/mem_64.S
View file

@ -37,6 +37,7 @@ _GLOBAL(memset)
clrldi r5,r5,58
mtctr r0
beq 5f
.balign 16
4: std r4,0(r6)
std r4,8(r6)
std r4,16(r6)
@ -90,6 +91,7 @@ _GLOBAL(backwards_memcpy)
andi. r0,r6,3
mtctr r7
bne 5f
.balign 16
1: lwz r7,-4(r4)
lwzu r8,-8(r4)
stw r7,-4(r6)

7
arch/powerpc/mm/Makefile
View file

@ -7,17 +7,16 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)
obj-y := fault.o mem.o pgtable.o mmap.o \
init_$(CONFIG_WORD_SIZE).o \
pgtable_$(CONFIG_WORD_SIZE).o
init_$(BITS).o pgtable_$(BITS).o
obj-$(CONFIG_PPC_MMU_NOHASH) += mmu_context_nohash.o tlb_nohash.o \
tlb_nohash_low.o
obj-$(CONFIG_PPC_BOOK3E) += tlb_low_$(CONFIG_WORD_SIZE)e.o
obj-$(CONFIG_PPC_BOOK3E) += tlb_low_$(BITS)e.o
hash64-$(CONFIG_PPC_NATIVE) := hash_native_64.o
obj-$(CONFIG_PPC_BOOK3E_64) += pgtable-book3e.o
obj-$(CONFIG_PPC_STD_MMU_64) += pgtable-hash64.o hash_utils_64.o slb_low.o slb.o $(hash64-y) mmu_context_book3s64.o pgtable-book3s64.o
obj-$(CONFIG_PPC_RADIX_MMU) += pgtable-radix.o tlb-radix.o
obj-$(CONFIG_PPC_STD_MMU_32) += ppc_mmu_32.o hash_low_32.o mmu_context_hash32.o
obj-$(CONFIG_PPC_STD_MMU) += tlb_hash$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_PPC_STD_MMU) += tlb_hash$(BITS).o
ifeq ($(CONFIG_PPC_STD_MMU_64),y)
obj-$(CONFIG_PPC_4K_PAGES) += hash64_4k.o
obj-$(CONFIG_PPC_64K_PAGES) += hash64_64k.o

4
arch/powerpc/mm/fault.c
View file

@ -205,7 +205,7 @@ static int mm_fault_error(struct pt_regs *regs, unsigned long addr, int fault)
* The return value is 0 if the fault was handled, or the signal
* number if this is a kernel fault that can't be handled here.
*/
int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
int do_page_fault(struct pt_regs *regs, unsigned long address,
unsigned long error_code)
{
enum ctx_state prev_state = exception_enter();
@ -498,8 +498,8 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
bail:
exception_exit(prev_state);
return rc;
}
NOKPROBE_SYMBOL(do_page_fault);
/*
* bad_page_fault is called when we have a bad access from the kernel.

81
arch/powerpc/mm/hash_utils_64.c
View file

@ -766,6 +766,29 @@ int remove_section_mapping(unsigned long start, unsigned long end)
}
#endif /* CONFIG_MEMORY_HOTPLUG */
static void update_hid_for_hash(void)
{
unsigned long hid0;
unsigned long rb = 3UL << PPC_BITLSHIFT(53); /* IS = 3 */
asm volatile("ptesync": : :"memory");
/* prs = 0, ric = 2, rs = 0, r = 1 is = 3 */
asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
: : "r"(rb), "i"(0), "i"(0), "i"(2), "r"(0) : "memory");
asm volatile("eieio; tlbsync; ptesync; isync; slbia": : :"memory");
/*
* now switch the HID
*/
hid0 = mfspr(SPRN_HID0);
hid0 &= ~HID0_POWER9_RADIX;
mtspr(SPRN_HID0, hid0);
asm volatile("isync": : :"memory");
/* Wait for it to happen */
while ((mfspr(SPRN_HID0) & HID0_POWER9_RADIX))
cpu_relax();
}
static void __init hash_init_partition_table(phys_addr_t hash_table,
unsigned long htab_size)
{
@ -792,6 +815,8 @@ static void __init hash_init_partition_table(phys_addr_t hash_table,
*/
partition_tb->patb1 = 0;
pr_info("Partition table %p\n", partition_tb);
if (cpu_has_feature(CPU_FTR_POWER9_DD1))
update_hid_for_hash();
/*
* update partition table control register,
* 64 K size.
@ -1515,6 +1540,29 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
local_irq_restore(flags);
}
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
static inline void tm_flush_hash_page(int local)
{
/*
* Transactions are not aborted by tlbiel, only tlbie. Without, syncing a
* page back to a block device w/PIO could pick up transactional data
* (bad!) so we force an abort here. Before the sync the page will be
* made read-only, which will flush_hash_page. BIG ISSUE here: if the
* kernel uses a page from userspace without unmapping it first, it may
* see the speculated version.
*/
if (local && cpu_has_feature(CPU_FTR_TM) && current->thread.regs &&
MSR_TM_ACTIVE(current->thread.regs->msr)) {
tm_enable();
tm_abort(TM_CAUSE_TLBI);
}
}
#else
static inline void tm_flush_hash_page(int local)
{
}
#endif
/* WARNING: This is called from hash_low_64.S, if you change this prototype,
* do not forget to update the assembly call site !
*/
@ -1541,21 +1589,7 @@ void flush_hash_page(unsigned long vpn, real_pte_t pte, int psize, int ssize,
ssize, local);
} pte_iterate_hashed_end();
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/* Transactions are not aborted by tlbiel, only tlbie.
* Without, syncing a page back to a block device w/ PIO could pick up
* transactional data (bad!) so we force an abort here. Before the
* sync the page will be made read-only, which will flush_hash_page.
* BIG ISSUE here: if the kernel uses a page from userspace without
* unmapping it first, it may see the speculated version.
*/
if (local && cpu_has_feature(CPU_FTR_TM) &&
current->thread.regs &&
MSR_TM_ACTIVE(current->thread.regs->msr)) {
tm_enable();
tm_abort(TM_CAUSE_TLBI);
}
#endif
tm_flush_hash_page(local);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@ -1612,22 +1646,7 @@ void flush_hash_hugepage(unsigned long vsid, unsigned long addr,
MMU_PAGE_16M, ssize, local);
}
tm_abort:
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/* Transactions are not aborted by tlbiel, only tlbie.
* Without, syncing a page back to a block device w/ PIO could pick up
* transactional data (bad!) so we force an abort here. Before the
* sync the page will be made read-only, which will flush_hash_page.
* BIG ISSUE here: if the kernel uses a page from userspace without
* unmapping it first, it may see the speculated version.
*/
if (local && cpu_has_feature(CPU_FTR_TM) &&
current->thread.regs &&
MSR_TM_ACTIVE(current->thread.regs->msr)) {
tm_enable();
tm_abort(TM_CAUSE_TLBI);
}
#endif
return;
tm_flush_hash_page(local);
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */

7
arch/powerpc/mm/hugetlbpage.c
View file

@ -1019,8 +1019,15 @@ int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr,
pte = READ_ONCE(*ptep);
mask = _PAGE_PRESENT | _PAGE_READ;
/*
* On some CPUs like the 8xx, _PAGE_RW hence _PAGE_WRITE is defined
* as 0 and _PAGE_RO has to be set when a page is not writable
*/
if (write)
mask |= _PAGE_WRITE;
else
mask |= _PAGE_RO;
if ((pte_val(pte) & mask) != mask)
return 0;

2
arch/powerpc/mm/init_32.c
View file

@ -137,7 +137,7 @@ void __init MMU_init(void)
if (memblock.memory.cnt > 1) {
#ifndef CONFIG_WII
memblock_enforce_memory_limit(memblock.memory.regions[0].size);
printk(KERN_WARNING "Only using first contiguous memory region");
pr_warn("Only using first contiguous memory region\n");
#else
wii_memory_fixups();
#endif

81
arch/powerpc/mm/mmu_context_iommu.c
View file

@ -15,6 +15,9 @@
#include <linux/rculist.h>
#include <linux/vmalloc.h>
#include <linux/mutex.h>
#include <linux/migrate.h>
#include <linux/hugetlb.h>
#include <linux/swap.h>
#include <asm/mmu_context.h>
static DEFINE_MUTEX(mem_list_mutex);
@ -72,6 +75,55 @@ bool mm_iommu_preregistered(void)
}
EXPORT_SYMBOL_GPL(mm_iommu_preregistered);
/*
* Taken from alloc_migrate_target with changes to remove CMA allocations
*/
struct page *new_iommu_non_cma_page(struct page *page, unsigned long private,
int **resultp)
{
gfp_t gfp_mask = GFP_USER;
struct page *new_page;
if (PageHuge(page) || PageTransHuge(page) || PageCompound(page))
return NULL;
if (PageHighMem(page))
gfp_mask |= __GFP_HIGHMEM;
/*
* We don't want the allocation to force an OOM if possibe
*/
new_page = alloc_page(gfp_mask | __GFP_NORETRY | __GFP_NOWARN);
return new_page;
}
static int mm_iommu_move_page_from_cma(struct page *page)
{
int ret = 0;
LIST_HEAD(cma_migrate_pages);
/* Ignore huge pages for now */
if (PageHuge(page) || PageTransHuge(page) || PageCompound(page))
return -EBUSY;
lru_add_drain();
ret = isolate_lru_page(page);
if (ret)
return ret;
list_add(&page->lru, &cma_migrate_pages);
put_page(page); /* Drop the gup reference */
ret = migrate_pages(&cma_migrate_pages, new_iommu_non_cma_page,
NULL, 0, MIGRATE_SYNC, MR_CMA);
if (ret) {
if (!list_empty(&cma_migrate_pages))
putback_movable_pages(&cma_migrate_pages);
}
return 0;
}
long mm_iommu_get(unsigned long ua, unsigned long entries,
struct mm_iommu_table_group_mem_t **pmem)
{
@ -124,15 +176,36 @@ long mm_iommu_get(unsigned long ua, unsigned long entries,
for (i = 0; i < entries; ++i) {
if (1 != get_user_pages_fast(ua + (i << PAGE_SHIFT),
1/* pages */, 1/* iswrite */, &page)) {
ret = -EFAULT;
for (j = 0; j < i; ++j)
put_page(pfn_to_page(
mem->hpas[j] >> PAGE_SHIFT));
put_page(pfn_to_page(mem->hpas[j] >>
PAGE_SHIFT));
vfree(mem->hpas);
kfree(mem);
ret = -EFAULT;
goto unlock_exit;
}
/*
* If we get a page from the CMA zone, since we are going to
* be pinning these entries, we might as well move them out
* of the CMA zone if possible. NOTE: faulting in + migration
* can be expensive. Batching can be considered later
*/
if (get_pageblock_migratetype(page) == MIGRATE_CMA) {
if (mm_iommu_move_page_from_cma(page))
goto populate;
if (1 != get_user_pages_fast(ua + (i << PAGE_SHIFT),
1/* pages */, 1/* iswrite */,
&page)) {
ret = -EFAULT;
for (j = 0; j < i; ++j)
put_page(pfn_to_page(mem->hpas[j] >>
PAGE_SHIFT));
vfree(mem->hpas);
kfree(mem);
goto unlock_exit;
}
}
populate:
mem->hpas[i] = page_to_pfn(page) << PAGE_SHIFT;
}

11
arch/powerpc/mm/pgtable-book3s64.c
View file

@ -35,7 +35,7 @@ int pmdp_set_access_flags(struct vm_area_struct *vma, unsigned long address,
#endif
changed = !pmd_same(*(pmdp), entry);
if (changed) {
__ptep_set_access_flags(pmdp_ptep(pmdp), pmd_pte(entry));
__ptep_set_access_flags(vma->vm_mm, pmdp_ptep(pmdp), pmd_pte(entry));
flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
}
return changed;
@ -116,3 +116,12 @@ void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
return;
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
/* For use by kexec */
void mmu_cleanup_all(void)
{
if (radix_enabled())
radix__mmu_cleanup_all();
else if (mmu_hash_ops.hpte_clear_all)
mmu_hash_ops.hpte_clear_all();
}

40
arch/powerpc/mm/pgtable-radix.c
View file

@ -294,6 +294,32 @@ void __init radix__early_init_devtree(void)
return;
}
static void update_hid_for_radix(void)
{
unsigned long hid0;
unsigned long rb = 3UL << PPC_BITLSHIFT(53); /* IS = 3 */
asm volatile("ptesync": : :"memory");
/* prs = 0, ric = 2, rs = 0, r = 1 is = 3 */
asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
: : "r"(rb), "i"(1), "i"(0), "i"(2), "r"(0) : "memory");
/* prs = 1, ric = 2, rs = 0, r = 1 is = 3 */
asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
: : "r"(rb), "i"(1), "i"(1), "i"(2), "r"(0) : "memory");
asm volatile("eieio; tlbsync; ptesync; isync; slbia": : :"memory");
/*
* now switch the HID
*/
hid0 = mfspr(SPRN_HID0);
hid0 |= HID0_POWER9_RADIX;
mtspr(SPRN_HID0, hid0);
asm volatile("isync": : :"memory");
/* Wait for it to happen */
while (!(mfspr(SPRN_HID0) & HID0_POWER9_RADIX))
cpu_relax();
}
void __init radix__early_init_mmu(void)
{
unsigned long lpcr;
@ -345,6 +371,8 @@ void __init radix__early_init_mmu(void)
if (!firmware_has_feature(FW_FEATURE_LPAR)) {
radix_init_native();
if (cpu_has_feature(CPU_FTR_POWER9_DD1))
update_hid_for_radix();
lpcr = mfspr(SPRN_LPCR);
mtspr(SPRN_LPCR, lpcr | LPCR_UPRT | LPCR_HR);
radix_init_partition_table();
@ -368,6 +396,18 @@ void radix__early_init_mmu_secondary(void)
}
}
void radix__mmu_cleanup_all(void)
{
unsigned long lpcr;
if (!firmware_has_feature(FW_FEATURE_LPAR)) {
lpcr = mfspr(SPRN_LPCR);
mtspr(SPRN_LPCR, lpcr & ~LPCR_UPRT);
mtspr(SPRN_PTCR, 0);
radix__flush_tlb_all();
}
}
void radix__setup_initial_memory_limit(phys_addr_t first_memblock_base,
phys_addr_t first_memblock_size)
{

2
arch/powerpc/mm/pgtable.c
View file

@ -224,7 +224,7 @@ int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address,
if (changed) {
if (!is_vm_hugetlb_page(vma))
assert_pte_locked(vma->vm_mm, address);
__ptep_set_access_flags(ptep, entry);
__ptep_set_access_flags(vma->vm_mm, ptep, entry);
flush_tlb_page(vma, address);
}
return changed;

8
arch/powerpc/mm/slb_low.S
View file

@ -178,11 +178,9 @@ BEGIN_FTR_SECTION
END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT)
b slb_finish_load
8: /* invalid EA */
li r10,0 /* BAD_VSID */
li r9,0 /* BAD_VSID */
li r11,SLB_VSID_USER /* flags don't much matter */
b slb_finish_load
8: /* invalid EA - return an error indication */
crset 4*cr0+eq /* indicate failure */
blr
/*
* Finish loading of an SLB entry and return

24
arch/powerpc/mm/tlb-radix.c
View file

@ -400,3 +400,27 @@ void radix__flush_pmd_tlb_range(struct vm_area_struct *vma,
radix__flush_tlb_range_psize(vma->vm_mm, start, end, MMU_PAGE_2M);
}
EXPORT_SYMBOL(radix__flush_pmd_tlb_range);
void radix__flush_tlb_all(void)
{
unsigned long rb,prs,r,rs;
unsigned long ric = RIC_FLUSH_ALL;
rb = 0x3 << PPC_BITLSHIFT(53); /* IS = 3 */
prs = 0; /* partition scoped */
r = 1; /* raidx format */
rs = 1 & ((1UL << 32) - 1); /* any LPID value to flush guest mappings */
asm volatile("ptesync": : :"memory");
/*
* now flush guest entries by passing PRS = 1 and LPID != 0
*/
asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
: : "r"(rb), "i"(r), "i"(1), "i"(ric), "r"(rs) : "memory");
/*
* now flush host entires by passing PRS = 0 and LPID == 0
*/
asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
: : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(0) : "memory");
asm volatile("eieio; tlbsync; ptesync": : :"memory");
}

2
arch/powerpc/net/bpf_jit.h
View file

@ -40,6 +40,8 @@
#define PPC_BLR() EMIT(PPC_INST_BLR)
#define PPC_BLRL() EMIT(PPC_INST_BLRL)
#define PPC_MTLR(r) EMIT(PPC_INST_MTLR | ___PPC_RT(r))
#define PPC_BCTR() EMIT(PPC_INST_BCTR)
#define PPC_MTCTR(r) EMIT(PPC_INST_MTCTR | ___PPC_RT(r))
#define PPC_ADDI(d, a, i) EMIT(PPC_INST_ADDI | ___PPC_RT(d) | \
___PPC_RA(a) | IMM_L(i))
#define PPC_MR(d, a) PPC_OR(d, a, a)

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