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CONFIG_ARCH_HAS_RAW_COPY_USER is unconditional now

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all architectures converted

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-04-05 19:15:53 -04:00
parent eea86b637a
commit 701cac61d0
35 changed files with 3 additions and 83 deletions
arch
Kconfig
alpha
Kconfig
arc
Kconfig
arm
Kconfig
arm64
Kconfig
avr32
Kconfig
blackfin
Kconfig
c6x
Kconfig
cris
Kconfig
frv
Kconfig
h8300
Kconfig
hexagon
Kconfig
ia64
Kconfig
m32r
Kconfig
m68k
Kconfig
metag
Kconfig
microblaze
Kconfig
mips
Kconfig
mn10300
Kconfig
nios2
Kconfig
openrisc
Kconfig
parisc
Kconfig
powerpc
Kconfig
s390
Kconfig
score
Kconfig
sh
Kconfig
sparc
Kconfig
tile
Kconfig
um
Kconfig.common
unicore32
Kconfig
x86
Kconfig
xtensa
Kconfig
include
asm-generic
uaccess.h
linux
uaccess.h
lib
Makefile

3
arch/Kconfig
View file

@ -847,7 +847,4 @@ config STRICT_MODULE_RWX
config ARCH_WANT_RELAX_ORDER
bool
config ARCH_HAS_RAW_COPY_USER
bool
source "kernel/gcov/Kconfig"

1
arch/alpha/Kconfig
View file

@ -26,7 +26,6 @@ config ALPHA
select ODD_RT_SIGACTION
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
select ARCH_HAS_RAW_COPY_USER
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,

1
arch/arc/Kconfig
View file

@ -44,7 +44,6 @@ config ARC
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZMA
select ARCH_HAS_RAW_COPY_USER
config MIGHT_HAVE_PCI
bool

1
arch/arm/Kconfig
View file

@ -96,7 +96,6 @@ config ARM
select PERF_USE_VMALLOC
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION
select ARCH_HAS_RAW_COPY_USER
# Above selects are sorted alphabetically; please add new ones
# according to that. Thanks.
help

1
arch/arm64/Kconfig
View file

@ -115,7 +115,6 @@ config ARM64
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK
select ARCH_HAS_RAW_COPY_USER
help
ARM 64-bit (AArch64) Linux support.

1
arch/avr32/Kconfig
View file

@ -19,7 +19,6 @@ config AVR32
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
select HAVE_NMI
select ARCH_HAS_RAW_COPY_USER
help
AVR32 is a high-performance 32-bit RISC microprocessor core,
designed for cost-sensitive embedded applications, with particular

1
arch/blackfin/Kconfig
View file

@ -41,7 +41,6 @@ config BLACKFIN
select MODULES_USE_ELF_RELA
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_NMI
select ARCH_HAS_RAW_COPY_USER
config GENERIC_CSUM
def_bool y

1
arch/c6x/Kconfig
View file

@ -18,7 +18,6 @@ config C6X
select GENERIC_CLOCKEVENTS
select MODULES_USE_ELF_RELA
select ARCH_NO_COHERENT_DMA_MMAP
select ARCH_HAS_RAW_COPY_USER
config MMU
def_bool n

1
arch/cris/Kconfig
View file

@ -71,7 +71,6 @@ config CRIS
select GENERIC_SCHED_CLOCK if ETRAX_ARCH_V32
select HAVE_DEBUG_BUGVERBOSE if ETRAX_ARCH_V32
select HAVE_NMI
select ARCH_HAS_RAW_COPY_USER
config HZ
int

1
arch/frv/Kconfig
View file

@ -16,7 +16,6 @@ config FRV
select OLD_SIGACTION
select HAVE_DEBUG_STACKOVERFLOW
select ARCH_NO_COHERENT_DMA_MMAP
select ARCH_HAS_RAW_COPY_USER
config ZONE_DMA
bool

1
arch/h8300/Kconfig
View file

@ -22,7 +22,6 @@ config H8300
select HAVE_ARCH_KGDB
select HAVE_ARCH_HASH
select CPU_NO_EFFICIENT_FFS
select ARCH_HAS_RAW_COPY_USER
config RWSEM_GENERIC_SPINLOCK
def_bool y

1
arch/hexagon/Kconfig
View file

@ -26,7 +26,6 @@ config HEXAGON
select GENERIC_CLOCKEVENTS_BROADCAST
select MODULES_USE_ELF_RELA
select GENERIC_CPU_DEVICES
select ARCH_HAS_RAW_COPY_USER
---help---
Qualcomm Hexagon is a processor architecture designed for high
performance and low power across a wide variety of applications.

1
arch/ia64/Kconfig
View file

@ -53,7 +53,6 @@ config IA64
select ARCH_USE_CMPXCHG_LOCKREF
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_HARDENED_USERCOPY
select ARCH_HAS_RAW_COPY_USER
default y
help
The Itanium Processor Family is Intel's 64-bit successor to

1
arch/m32r/Kconfig
View file

@ -19,7 +19,6 @@ config M32R
select HAVE_DEBUG_STACKOVERFLOW
select CPU_NO_EFFICIENT_FFS
select DMA_NOOP_OPS
select ARCH_HAS_RAW_COPY_USER
config SBUS
bool

1
arch/m68k/Kconfig
View file

@ -22,7 +22,6 @@ config M68K
select MODULES_USE_ELF_RELA
select OLD_SIGSUSPEND3
select OLD_SIGACTION
select ARCH_HAS_RAW_COPY_USER
config RWSEM_GENERIC_SPINLOCK
bool

1
arch/metag/Kconfig
View file

@ -1,6 +1,5 @@
config METAG
def_bool y
select ARCH_HAS_RAW_COPY_USER
select EMBEDDED
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS

1
arch/microblaze/Kconfig
View file

@ -34,7 +34,6 @@ config MICROBLAZE
select TRACING_SUPPORT
select VIRT_TO_BUS
select CPU_NO_EFFICIENT_FFS
select ARCH_HAS_RAW_COPY_USER
config SWAP
def_bool n

1
arch/mips/Kconfig
View file

@ -69,7 +69,6 @@ config MIPS
select HAVE_EXIT_THREAD
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_ARCH_HARDENED_USERCOPY
select ARCH_HAS_RAW_COPY_USER
menu "Machine selection"

1
arch/mn10300/Kconfig
View file

@ -16,7 +16,6 @@ config MN10300
select OLD_SIGACTION
select HAVE_DEBUG_STACKOVERFLOW
select ARCH_NO_COHERENT_DMA_MMAP
select ARCH_HAS_RAW_COPY_USER
config AM33_2
def_bool n

1
arch/nios2/Kconfig
View file

@ -16,7 +16,6 @@ config NIOS2
select SPARSE_IRQ
select USB_ARCH_HAS_HCD if USB_SUPPORT
select CPU_NO_EFFICIENT_FFS
select ARCH_HAS_RAW_COPY_USER
config GENERIC_CSUM
def_bool y

1
arch/openrisc/Kconfig
View file

@ -28,7 +28,6 @@ config OPENRISC
select OR1K_PIC
select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
select NO_BOOTMEM
select ARCH_HAS_RAW_COPY_USER
config MMU
def_bool y

1
arch/parisc/Kconfig
View file

@ -41,7 +41,6 @@ config PARISC
select GENERIC_CLOCKEVENTS
select ARCH_NO_COHERENT_DMA_MMAP
select CPU_NO_EFFICIENT_FFS
select ARCH_HAS_RAW_COPY_USER
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used

1
arch/powerpc/Kconfig
View file

@ -87,7 +87,6 @@ config PPC
select ARCH_HAS_DMA_SET_COHERENT_MASK
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_RAW_COPY_USER
select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST

1
arch/s390/Kconfig
View file

@ -178,7 +178,6 @@ config S390
select ARCH_HAS_SCALED_CPUTIME
select VIRT_TO_BUS
select HAVE_NMI
select ARCH_HAS_RAW_COPY_USER
config SCHED_OMIT_FRAME_POINTER

1
arch/score/Kconfig
View file

@ -15,7 +15,6 @@ config SCORE
select MODULES_USE_ELF_REL
select CLONE_BACKWARDS
select CPU_NO_EFFICIENT_FFS
select ARCH_HAS_RAW_COPY_USER
choice
prompt "System type"

1
arch/sh/Kconfig
View file

@ -48,7 +48,6 @@ config SUPERH
select HAVE_ARCH_AUDITSYSCALL
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_NMI
select ARCH_HAS_RAW_COPY_USER
help
The SuperH is a RISC processor targeted for use in embedded systems
and consumer electronics; it was also used in the Sega Dreamcast

1
arch/sparc/Kconfig
View file

@ -45,7 +45,6 @@ config SPARC
select HAVE_ARCH_HARDENED_USERCOPY
select PROVE_LOCKING_SMALL if PROVE_LOCKING
select ARCH_WANT_RELAX_ORDER
select ARCH_HAS_RAW_COPY_USER
config SPARC32
def_bool !64BIT

1
arch/tile/Kconfig
View file

@ -33,7 +33,6 @@ config TILE
select USER_STACKTRACE_SUPPORT
select USE_PMC if PERF_EVENTS
select VIRT_TO_BUS
select ARCH_HAS_RAW_COPY_USER
config MMU
def_bool y

1
arch/um/Kconfig.common
View file

@ -13,7 +13,6 @@ config UML
select GENERIC_CLOCKEVENTS
select HAVE_GCC_PLUGINS
select TTY # Needed for line.c
select ARCH_HAS_RAW_COPY_USER
config MMU
bool

1
arch/unicore32/Kconfig
View file

@ -18,7 +18,6 @@ config UNICORE32
select ARCH_WANT_FRAME_POINTERS
select GENERIC_IOMAP
select MODULES_USE_ELF_REL
select ARCH_HAS_RAW_COPY_USER
help
UniCore-32 is 32-bit Instruction Set Architecture,
including a series of low-power-consumption RISC chip

1
arch/x86/Kconfig
View file

@ -175,7 +175,6 @@ config X86
select USER_STACKTRACE_SUPPORT
select VIRT_TO_BUS
select X86_FEATURE_NAMES if PROC_FS
select ARCH_HAS_RAW_COPY_USER
config INSTRUCTION_DECODER
def_bool y

1
arch/xtensa/Kconfig
View file

@ -29,7 +29,6 @@ config XTENSA
select NO_BOOTMEM
select PERF_USE_VMALLOC
select VIRT_TO_BUS
select ARCH_HAS_RAW_COPY_USER
help
Xtensa processors are 32-bit RISC machines designed by Tensilica
primarily for embedded systems. These processors are both

41
include/asm-generic/uaccess.h
View file

@ -86,11 +86,7 @@ static inline int __access_ok(unsigned long addr, unsigned long size)
static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
{
#ifdef CONFIG_ARCH_HAS_RAW_COPY_USER
return unlikely(raw_copy_to_user(ptr, x, size)) ? -EFAULT : 0;
#else
return unlikely(__copy_to_user(ptr, x, size)) ? -EFAULT : 0;
#endif
}
#define __put_user_fn(sz, u, k) __put_user_fn(sz, u, k)
@ -151,11 +147,7 @@ extern int __put_user_bad(void) __attribute__((noreturn));
#ifndef __get_user_fn
static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
{
#ifdef CONFIG_ARCH_HAS_RAW_COPY_USER
return unlikely(raw_copy_from_user(x, ptr, size)) ? -EFAULT : 0;
#else
return unlikely(__copy_from_user(x, ptr, size)) ? -EFAULT : 0;
#endif
}
#define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
@ -164,39 +156,6 @@ static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
extern int __get_user_bad(void) __attribute__((noreturn));
#ifndef CONFIG_ARCH_HAS_RAW_COPY_USER
#ifndef __copy_from_user_inatomic
#define __copy_from_user_inatomic __copy_from_user
#endif
#ifndef __copy_to_user_inatomic
#define __copy_to_user_inatomic __copy_to_user
#endif
static inline long copy_from_user(void *to,
const void __user * from, unsigned long n)
{
unsigned long res = n;
might_fault();
if (likely(access_ok(VERIFY_READ, from, n)))
res = __copy_from_user(to, from, n);
if (unlikely(res))
memset(to + (n - res), 0, res);
return res;
}
static inline long copy_to_user(void __user *to,
const void *from, unsigned long n)
{
might_fault();
if (access_ok(VERIFY_WRITE, to, n))
return __copy_to_user(to, from, n);
else
return n;
}
#endif
/*
* Copy a null terminated string from userspace.
*/

7
include/linux/uaccess.h
View file

@ -12,12 +12,10 @@
#include <asm/uaccess.h>
#ifdef CONFIG_ARCH_HAS_RAW_COPY_USER
/*
* Architectures should provide two primitives (raw_copy_{to,from}_user())
* select ARCH_HAS_RAW_COPY_FROM_USER and get rid of their private instances
* of copy_{to,from}_user() and __copy_{to,from}_user{,_inatomic}(). Once
* all of them switch, this part of linux/uaccess.h will become unconditional.
* and get rid of their private instances of copy_{to,from}_user() and
* __copy_{to,from}_user{,_inatomic}().
*
* raw_copy_{to,from}_user(to, from, size) should copy up to size bytes and
* return the amount left to copy. They should assume that access_ok() has
@ -196,7 +194,6 @@ copy_in_user(void __user *to, const void *from, unsigned long n)
return n;
}
#endif
#endif
static __always_inline void pagefault_disabled_inc(void)
{

4
lib/Makefile
View file

@ -41,7 +41,7 @@ obj-y += bcd.o div64.o sort.o parser.o debug_locks.o random32.o \
gcd.o lcm.o list_sort.o uuid.o flex_array.o iov_iter.o clz_ctz.o \
bsearch.o find_bit.o llist.o memweight.o kfifo.o \
percpu-refcount.o percpu_ida.o rhashtable.o reciprocal_div.o \
once.o refcount.o
once.o refcount.o usercopy.o
obj-y += string_helpers.o
obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
obj-y += hexdump.o
@ -242,5 +242,3 @@ UBSAN_SANITIZE_ubsan.o := n
obj-$(CONFIG_SBITMAP) += sbitmap.o
obj-$(CONFIG_PARMAN) += parman.o
obj-$(CONFIG_ARCH_HAS_RAW_COPY_USER) += usercopy.o