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kernel-fxtec-pro1x/arch/powerpc/mm
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Benjamin Herrenschmidt 171aa2caaa powerpc/mm: Fix bugs in huge page hashing 
There's a couple of nasty bugs lurking in our huge page hashing code.

First, we don't check the access permission atomically with setting
the _PAGE_BUSY bit, which means that the PTE value we end up using
for the hashing might be different than the one we have checked
the access permissions for.

We've seen cases where that leads us to try to use an invalidated
PTE for hashing, causing all sort of "interesting" issues.

Then, we also failed to set _PAGE_DIRTY on a write access.

Finally, a minor tweak but we should return 0 when we find the
PTE busy, in order to just re-execute the access, rather than 1
which means going to do_page_fault().

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
2010-07-23 12:55:21 +10:00
..
40x_mmu.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
44x_mmu.c powerpc/47x: Base ppc476 support 2010-05-05 09:11:10 -04:00
dma-noncoherent.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
fault.c powerpc: Invoke oom-killer from page fault 2010-05-06 17:15:58 +10:00
fsl_booke_mmu.c powerpc/fsl-booke: Move loadcam_entry back to asm code to fix SMP ftrace 2010-05-17 10:56:20 -05:00
gup.c powerpc/mm: Allow more flexible layouts for hugepage pagetables 2009-10-30 17:20:58 +11:00
hash_low_32.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
hash_low_64.S powerpc/mm: Move around testing of _PAGE_PRESENT in hash code 2010-07-23 08:53:23 +10:00
hash_native_64.c powerpc: Convert native_tlbie_lock to raw_spinlock 2010-02-19 14:52:30 +11:00
hash_utils_64.c powerpc/mm: Move around testing of _PAGE_PRESENT in hash code 2010-07-23 08:53:23 +10:00
highmem.c powerpc/mm: Make k(un)map_atomic out of line 2009-06-26 14:37:25 +10:00
hugetlbpage-hash64.c powerpc/mm: Fix bugs in huge page hashing 2010-07-23 12:55:21 +10:00
hugetlbpage.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
init_32.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
init_64.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
Makefile powerpc/mm: Split hash MMU specific hugepage code into a new file 2009-10-30 17:20:59 +11:00
mem.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
mmap_64.c powerpc: Use helpers for rlimits 2010-01-15 13:20:08 +11:00
mmu_context_hash32.c PPC: Split context init/destroy functions 2010-05-17 12:18:20 +03:00
mmu_context_hash64.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mmu_context_nohash.c powerpc/47x: Base ppc476 support 2010-05-05 09:11:10 -04:00
mmu_decl.h powerpc/fsl-booke: Move loadcam_entry back to asm code to fix SMP ftrace 2010-05-17 10:56:20 -05:00
numa.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
pgtable.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pgtable_32.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
pgtable_64.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
ppc_mmu_32.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
slb.c powerpc/pseries: Fix to handle slb resize across migration 2009-09-02 16:19:01 +10:00
slb_low.S powerpc/mm: Fix hang accessing top of vmalloc space 2009-10-14 16:58:36 +11:00
slice.c powerpc: is_hugepage_only_range() must account for both 4kB and 64kB slices 2009-01-16 16:15:16 +11:00
stab.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
subpage-prot.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
tlb_hash32.c powerpc/mm: Rework & cleanup page table freeing code path 2009-08-20 10:24:56 +10:00
tlb_hash64.c powerpc: Fix address masking bug in hpte_need_flush() 2010-02-10 13:58:06 +11:00
tlb_low_64e.S fix comment typo leve -> level in powerpc 2010-02-05 12:22:38 +01:00
tlb_nohash.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
tlb_nohash_low.S powerpc/fsl-booke: Move loadcam_entry back to asm code to fix SMP ftrace 2010-05-17 10:56:20 -05:00