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aha/arch/x86
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Steven Rostedt 3c3e5694ad x86: check PMD in spurious_fault handler 
Impact: fix to prevent hard lockup on bad PMD permissions

If the PMD does not have the correct permissions for a page access,
but the PTE does, the spurious fault handler will mistake the fault
as a lazy TLB transaction. This will result in an infinite loop of:

 fault -> spurious_fault check (pass) -> return to code -> fault

This patch adds a check and a warn on if the PTE passes the permissions
but the PMD does not.

[ Updated: Ingo Molnar suggested using WARN_ONCE with some text ]

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2009-02-20 11:44:47 -05:00
..
boot x86 setup: fix asm constraints in vesa_store_edid 2009-01-30 23:55:25 +01:00
configs eeprom: More consistent symbol names 2009-01-26 21:19:57 +01:00
crypto crypto: crc32c-intel - Switch to shash 2008-12-25 11:01:37 +11:00
ia32 x86-64: fix int $0x80 -ENOSYS return 2009-02-06 18:22:29 -08:00
include/asm mm: clean up for early_pfn_to_nid() 2009-02-18 15:37:55 -08:00
kernel x86, vmi: TSC going backwards check in vmi clocksource 2009-02-20 07:53:08 +01:00
kvm KVM: VMX: Flush volatile msrs before emulating rdmsr 2009-02-15 02:47:39 +02:00
lguest lguest: typos fix 2009-01-30 11:34:10 +10:30
lib x86: use early clobbers in usercopy*.c 2009-01-21 09:43:17 +01:00
mach-default x86/Voyager: make it build and boot 2009-01-31 18:26:07 +01:00
mach-generic x86: rename all fields of mpc_table mpc_X to X 2009-01-05 14:08:34 +01:00
mach-rdc321x
mach-voyager x86/Voyager: make it build and boot 2009-01-31 18:26:07 +01:00
math-emu x86: fix math_emu register frame access 2009-02-10 00:39:14 +01:00
mm x86: check PMD in spurious_fault handler 2009-02-20 11:44:47 -05:00
oprofile Merge branch 'oprofile/ring_buffer' into oprofile/oprofile-for-tip 2009-01-08 14:27:34 +01:00
pci PCI: irq and pci_ids patch for Intel Tigerpoint DeviceIDs 2009-01-27 09:46:08 -08:00
power x86, hibernate: fix breakage on x86_32 with CONFIG_NUMA set 2008-11-12 23:28:51 +01:00
vdso Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6 2008-12-28 12:33:21 -08:00
video
xen xen: disable interrupts before saving in percpu 2009-02-03 17:22:40 -08:00
Kconfig x86: disable intel_iommu support by default 2009-02-05 16:48:38 +01:00
Kconfig.cpu x86/Kconfig.cpu: make Kconfig help readable in the console 2009-02-04 22:19:27 +01:00
Kconfig.debug trace: mmiotrace to the tracer menu in Kconfig 2009-02-15 20:03:28 +01:00
Makefile
Makefile_32.cpu