Commit 4dcbd88e authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Michael Ellerman

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: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 4ad90c86
...@@ -71,7 +71,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid, ...@@ -71,7 +71,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid,
*/ */
shift = mmu_psize_defs[psize].shift; shift = mmu_psize_defs[psize].shift;
index = (ea & ~HPAGE_PMD_MASK) >> shift; index = (ea & ~HPAGE_PMD_MASK) >> shift;
BUG_ON(index >= 4096); BUG_ON(index >= PTE_FRAG_SIZE);
vpn = hpt_vpn(ea, vsid, ssize); vpn = hpt_vpn(ea, vsid, ssize);
hpte_slot_array = get_hpte_slot_array(pmdp); hpte_slot_array = get_hpte_slot_array(pmdp);
......
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