linux/arch/x86
Ingo Molnar 121d5d0a7e x86, mm: fault.c, enable PF_RSVD checks on 32-bit too
Impact: improve page fault handling robustness

The 'PF_RSVD' flag (bit 3) of the page-fault error_code is a
relatively recent addition to x86 CPUs, so the 32-bit do_fault()
implementation never had it. This flag gets set when the CPU
detects nonzero values in any reserved bits of the page directory
entries.

Extend the existing 64-bit check for PF_RSVD in do_page_fault()
to 32-bit too. If we detect such a fault then we print a more
informative oops and the pagetables.

This unifies the code some more, removes an ugly #ifdef and improves
the 32-bit page fault code robustness a bit. It slightly increases
the 32-bit kernel text size.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-21 00:09:41 +01:00
..
boot Merge branches 'x86/asm', 'x86/cleanups' and 'x86/headers' into x86/core 2009-02-20 17:40:50 +01:00
configs Merge branches 'x86/acpi', 'x86/asm', 'x86/cpudetect', 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/doc', 'x86/header-fixes', 'x86/headers' and 'x86/minor-fixes' into x86/core 2009-02-13 09:46:36 +01:00
crypto crypto: crc32c-intel - Switch to shash 2008-12-25 11:01:37 +11:00
ia32 Merge branch 'linus' into x86/apic 2009-02-13 09:44:22 +01:00
include/asm Merge branches 'x86/asm', 'x86/cleanups' and 'x86/headers' into x86/core 2009-02-20 17:40:50 +01:00
kernel Merge branches 'x86/asm', 'x86/cleanups' and 'x86/headers' into x86/core 2009-02-20 17:40:50 +01:00
kvm KVM: VMX: Flush volatile msrs before emulating rdmsr 2009-02-15 02:47:39 +02:00
lguest x86, apic: remove genapic.h 2009-02-17 17:52:44 +01:00
lib x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
mach-voyager Merge commit 'remotes/tip/x86/paravirt' into x86/untangle2 2009-02-11 11:52:22 -08:00
math-emu x86: add %gs accessors for x86_32 2009-02-10 00:41:58 +01:00
mm x86, mm: fault.c, enable PF_RSVD checks on 32-bit too 2009-02-21 00:09:41 +01:00
oprofile x86, apic: remove genapic.h 2009-02-17 17:52:44 +01:00
pci x86, apic: remove genapic.h 2009-02-17 17:52:44 +01:00
power x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
vdso x86: no stack protector for vdso 2009-02-10 00:41:56 +01:00
video
xen Merge branches 'x86/asm', 'x86/cleanups' and 'x86/headers' into x86/core 2009-02-20 17:40:50 +01:00
Kconfig x86, apic: fix build fallout of genapic changes 2009-02-17 13:13:25 +01:00
Kconfig.cpu Merge branch 'x86/urgent' into core/percpu 2009-02-10 00:41:02 +01:00
Kconfig.debug Merge branch 'x86/urgent' into x86/core 2009-02-20 17:40:43 +01:00
Makefile Merge branch 'core/percpu' into x86/core 2009-02-13 09:45:09 +01:00
Makefile_32.cpu