Jeremy Fitzhardinge b534816b55 x86: don't apply __supported_pte_mask to non-present ptes ... On an x86 system which doesn't support global mappings, __supported_pte_mask has _PAGE_GLOBAL clear, to make sure it never appears in the PTE. pfn_pte() and so on will enforce it with: static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot) { return __pte((((phys_addr_t)page_nr << PAGE_SHIFT) | pgprot_val(pgprot)) & __supported_pte_mask); } However, we overload _PAGE_GLOBAL with _PAGE_PROTNONE on non-present ptes to distinguish them from swap entries. However, applying __supported_pte_mask indiscriminately will clear the bit and corrupt the pte. I guess the best fix is to only apply __supported_pte_mask to present ptes. This seems like the right solution to me, as it means we can completely ignore the issue of overlaps between the present pte bits and the non-present pte-as-swap entry use of the bits. __supported_pte_mask contains the set of flags we support on the current hardware. We also use bits in the pte for things like logically present ptes with no permissions, and swap entries for swapped out pages. We should only apply __supported_pte_mask to present ptes, because otherwise we may destroy other information being stored in the ptes. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>		2009-02-04 21:33:09 -08:00
..
bigsmp
es7000	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-10 06:13:09 -08:00
mach-default	x86: fix apic.c build error on latest git	2009-01-12 19:24:23 +01:00
mach-generic	x86: rename mp_config_table to mpc_table	2009-01-04 13:22:58 +01:00
mach-rdc321x
mach-voyager
numaq	Merge branches 'x86/cleanups', 'x86/mpparse', 'x86/numa' and 'x86/uv' into x86/urgent	2009-01-06 17:39:52 +01:00
summit	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-10 06:13:09 -08:00
uv	x86: uv_bau.h: fix dubious bitfield	2008-12-30 13:31:37 -08:00
visws
xen	x86: don't apply __supported_pte_mask to non-present ptes	2009-02-04 21:33:09 -08:00
a.out-core.h
a.out.h
acpi.h
agp.h
alternative-asm.h
alternative.h
amd_iommu.h
amd_iommu_types.h	AMD IOMMU: add init code for statistic collection	2009-01-03 14:11:58 +01:00
apic.h	x86: apic.c: xapic_icr_read and x2apic_icr_read should be static	2008-12-30 13:31:28 -08:00
apicdef.h
arch_hooks.h
asm.h
atomic.h
atomic_32.h	atomic_t: unify all arch definitions	2009-01-06 15:59:10 -08:00
atomic_64.h	atomic_t: unify all arch definitions	2009-01-06 15:59:10 -08:00
auxvec.h
bios_ebda.h
bitops.h	x86, generic: mark complex bitops.h inlines as __always_inline	2009-01-13 18:56:30 +01:00
boot.h
bootparam.h
bug.h
bugs.h
byteorder.h	byteorder: make swab.h include asm/swab.h like a regular header	2009-01-14 19:56:50 -08:00
cache.h
cacheflush.h
calgary.h
calling.h
checksum.h
checksum_32.h
checksum_64.h
cmpxchg.h
cmpxchg_32.h
cmpxchg_64.h
compat.h
cpu.h
cpufeature.h
cputime.h
current.h
debugreg.h
delay.h
desc.h	x86: fix lguest used_vectors breakage, -v2	2008-12-23 22:37:28 +01:00
desc_defs.h
device.h
div64.h
dma-mapping.h	Documentation: move DMA-mapping.txt to Doc/PCI/	2009-01-29 18:19:29 -08:00
dma.h
dmi.h
ds.h
dwarf2.h
e820.h	headers_check fix: x86, e820.h	2009-01-31 00:16:22 +05:30
edac.h
efi.h	x86: efi.c declare add_efi_memmap before they get used	2008-12-29 18:17:32 +01:00
elf.h	[S390] arch_setup_additional_pages arguments	2008-12-25 13:38:54 +01:00
emergency-restart.h
errno.h
fb.h
fcntl.h
fixmap.h
fixmap_32.h
fixmap_64.h
floppy.h
frame.h
ftrace.h
futex.h
gart.h
genapic.h
genapic_32.h	x86: rename mpc_config_processor to mpc_cpu	2009-01-04 13:23:00 +01:00
genapic_64.h
geode.h
gpio.h
hardirq.h
hardirq_32.h
hardirq_64.h
highmem.h
hpet.h
hugetlb.h
hw_irq.h
hypertransport.h
hypervisor.h
i387.h
i8253.h
i8259.h
ia32.h
ia32_unistd.h
idle.h
intel_arch_perfmon.h
io.h	x86: fix assumed to be contiguous leaf page tables for kmap_atomic region (take 2)	2009-01-16 13:47:04 +01:00
io_32.h
io_64.h
io_apic.h	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-30 16:20:19 -08:00
ioctl.h
ioctls.h
iomap.h
iommu.h	Merge branch 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-30 16:10:19 -08:00
ipcbuf.h
ipi.h
irq.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask	2009-01-03 18:53:31 +01:00
irq_regs.h
irq_regs_32.h
irq_regs_64.h
irq_remapping.h
irq_vectors.h
irqflags.h
ist.h
k8.h
Kbuild	byteorder: make swab.h include asm/swab.h like a regular header	2009-01-14 19:56:50 -08:00
kdebug.h
kexec.h
kgdb.h
kmap_types.h
kprobes.h
kvm.h	headers_check fix: x86, kvm.h	2009-01-31 00:16:44 +05:30
kvm_host.h	KVM: change KVM to use IOMMU API	2009-01-03 14:11:07 +01:00
kvm_para.h
kvm_x86_emulate.h	KVM: x86 emulator: add Src2 decode set	2008-12-31 16:55:42 +02:00
ldt.h
lguest.h	x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids	2009-01-03 19:00:55 +01:00
lguest_hcall.h
linkage.h
local.h
math_emu.h
mc146818rtc.h
mca.h
mca_dma.h
mce.h	headers_check fix: x86, mce.h	2009-01-31 00:17:13 +05:30
microcode.h
mman.h
mmconfig.h
mmu.h
mmu_context.h
mmu_context_32.h
mmu_context_64.h
mmx.h
mmzone.h
mmzone_32.h
mmzone_64.h
module.h
mpspec.h	x86: apic.c declare pic_mode before they get used	2008-12-29 18:17:30 +01:00
mpspec_def.h	x86: rename all fields of mpc_table mpc_X to X	2009-01-05 14:08:34 +01:00
msgbuf.h
msidef.h
msr-index.h	x86: add MSR_IA32_MISC_ENABLE bits to <asm/msr-index.h>	2009-01-21 15:13:53 -08:00
msr.h	Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-28 12:21:10 -08:00
mtrr.h	headers_check fix: x86, mtrr.h	2009-01-31 00:17:39 +05:30
mutex.h
mutex_32.h
mutex_64.h
nmi.h
nops.h
numa.h
numa_32.h
numa_64.h
numaq.h
olpc.h
page.h
page_32.h
page_64.h
param.h
paravirt.h
parport.h
pat.h
pci-direct.h
pci.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	2008-12-31 23:05:57 +10:30
pci_32.h
pci_64.h
pci_x86.h	x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.h	2008-12-29 18:17:36 +01:00
pda.h
percpu.h
pgalloc.h	x86, mm: fix pte_free()	2009-01-23 18:42:06 +01:00
pgtable-2level-defs.h
pgtable-2level.h
pgtable-3level-defs.h
pgtable-3level.h
pgtable.h	x86: don't apply __supported_pte_mask to non-present ptes	2009-02-04 21:33:09 -08:00
pgtable_32.h
pgtable_64.h
poll.h
posix_types.h
posix_types_32.h
posix_types_64.h
prctl.h
processor-cyrix.h
processor-flags.h
processor.h	Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-28 12:21:10 -08:00
proto.h
ptrace-abi.h	headers_check fix: x86, ptrace-abi.h	2009-01-31 00:18:03 +05:30
ptrace.h
pvclock-abi.h
pvclock.h
reboot.h
reboot_fixups.h
required-features.h
resource.h
resume-trace.h
rio.h
rtc.h
rwlock.h
rwsem.h
scatterlist.h
seccomp.h
seccomp_32.h
seccomp_64.h
sections.h
segment.h
sembuf.h
serial.h
setup.h	x86: rename mpc_config_oemtable to mpc_oemtable	2009-01-04 13:23:02 +01:00
shmbuf.h
shmparam.h
sigcontext.h	headers_check fix: x86, sigcontext.h	2009-01-31 00:18:30 +05:30
sigcontext32.h	headers_check fix: x86, sigcontext32.h	2009-01-31 00:18:58 +05:30
sigframe.h
siginfo.h
signal.h
smp.h	x86: cleanup remaining cpumask_t ops in smpboot code	2009-01-04 15:39:26 +01:00
socket.h
sockios.h
sparsemem.h
spinlock.h
spinlock_types.h
srat.h
stacktrace.h
stat.h
statfs.h
string.h
string_32.h
string_64.h
suspend.h
suspend_32.h
suspend_64.h
svm.h	KVM: SVM: move svm.h to include/asm	2008-12-31 16:52:28 +02:00
swab.h	headers_check fix: x86, swab.h	2009-01-31 00:19:32 +05:30
swiotlb.h	swiotlb: replace architecture-specific swiotlb.h with linux/swiotlb.h	2008-12-28 10:04:00 +01:00
sync_bitops.h
sys_ia32.h	x86: introducing asm/sys_ia32.h	2008-12-29 13:18:40 +01:00
syscall.h
syscalls.h	Revert "x86: signal: change type of paramter for sys_rt_sigreturn()"	2009-01-21 09:43:18 +01:00
system.h
system_64.h
tce.h
termbits.h
termios.h
therm_throt.h
thread_info.h	Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-28 12:21:10 -08:00
time.h
timer.h
timex.h	x86: use standard PIT frequency	2009-01-25 16:57:47 +01:00
tlb.h
tlbflush.h
topology.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask	2009-01-03 18:53:31 +01:00
trampoline.h
traps.h
tsc.h
types.h
uaccess.h	Merge branch 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-30 16:10:19 -08:00
uaccess_32.h
uaccess_64.h
ucontext.h
unaligned.h
unistd.h
unistd_32.h
unistd_64.h
user.h
user32.h
user_32.h
user_64.h
vdso.h
vga.h
vgtod.h
vic.h
virtext.h	x86: cpu_emergency_svm_disable() function	2008-12-31 16:52:30 +02:00
vm86.h
vmi.h
vmi_time.h
vmware.h
vmx.h	KVM: VMX: move ASM_VMX_* definitions from asm/kvm_host.h to asm/vmx.h	2008-12-31 16:52:28 +02:00
voyager.h
vsyscall.h
xcr.h
xor.h
xor_32.h
xor_64.h
xsave.h