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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2015-11-28 22:39:33 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2015-12-14 15:19:04 +1100 |
| commit | 0863d7f2136550a281f40f4d8556bffd09fd4c2d (patch) | |
| tree | 33b8588a67d7dbf88bb7ea8a23378c24fc153542 /arch | |
| parent | powerpc: Fix DSCR inheritance over fork() (diff) | |
| download | linux-dev-0863d7f2136550a281f40f4d8556bffd09fd4c2d.tar.xz linux-dev-0863d7f2136550a281f40f4d8556bffd09fd4c2d.zip | |
powerpc/mm: Fix infinite loop in hash fault with 4K page size
This is the same bug we fixed as part of 09567e7fd44291bfc08accfdd67ad8f467842332
("powerpc/mm: Check paca psize is up to date for huge mappings"). Please
check that for details. The difference here is that faults were
happening on a 4K page at an address previously mapped by hugetlb.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Reviewed-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 7f9616f7c479..7d4f254a2671 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -1148,9 +1148,10 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea, } } +#endif /* CONFIG_PPC_64K_PAGES */ + if (current->mm == mm) check_paca_psize(ea, mm, psize, user_region); -#endif /* CONFIG_PPC_64K_PAGES */ #ifdef CONFIG_PPC_64K_PAGES if (psize == MMU_PAGE_64K) |