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
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
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
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