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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2018-03-26 15:34:50 +0530
committerMichael Ellerman <mpe@ellerman.id.au>2018-03-31 00:10:39 +1100
commit872a100a49c3785b4577e002580ca5689d1be7a1 (patch)
tree4fe12a018c17f1b2e8917ee8b200ba8e0570c0b1 /include
parentc2b4d8b7417a59b7f9a52d0d8402f5257cbbd398 (diff)
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powerpc/mm/hash: Don't memset pgd table if not needed
We need to zero-out pgd table only if we share the slab cache with pud/pmd level caches. With the support of 4PB, we don't share the slab cache anymore. Instead of removing the code completely hide it within an #ifdef. We don't need to do this with any other page table level, because they all allocate table of double the size and we take of initializing the first half corrrectly during page table zap. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> [mpe: Consolidate multiple #if / #ifdef into one] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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