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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2015-12-01 09:07:00 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2015-12-14 15:19:17 +1100 |
| commit | 4dcbd88eb600d52ce52a75c5075c2eff2f6849e6 (patch) | |
| tree | 852238526c85dd60f20e11c8f4c9be8f082bc7b2 /arch/powerpc/mm/hugepage-hash64.c | |
| parent | powerpc/mm: Use H_READ with H_READ_4 (diff) | |
| download | linux-dev-4dcbd88eb600d52ce52a75c5075c2eff2f6849e6.tar.xz linux-dev-4dcbd88eb600d52ce52a75c5075c2eff2f6849e6.zip | |
powerpc/mm: Don't open code pgtable_t size
The slot information of base page size hash pte is stored in the
pgtable_t w.r.t transparent hugepage. We need to make sure we don't
index beyond pgtable_t size.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/hugepage-hash64.c')
| -rw-r--r-- | arch/powerpc/mm/hugepage-hash64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/hugepage-hash64.c b/arch/powerpc/mm/hugepage-hash64.c index 1f666de0110a..baf1301ded0c 100644 --- a/arch/powerpc/mm/hugepage-hash64.c +++ b/arch/powerpc/mm/hugepage-hash64.c @@ -71,7 +71,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid, */ shift = mmu_psize_defs[psize].shift; index = (ea & ~HPAGE_PMD_MASK) >> shift; - BUG_ON(index >= 4096); + BUG_ON(index >= PTE_FRAG_SIZE); vpn = hpt_vpn(ea, vsid, ssize); hpte_slot_array = get_hpte_slot_array(pmdp); |