Commit afd31356 authored Feb 18, 2020 by Michael Ellerman Committed by Paul Mackerras Mar 19, 2020

KVM: PPC: Book3S HV: Use RADIX_PTE_INDEX_SIZE in Radix MMU code



In kvmppc_unmap_free_pte() in book3s_64_mmu_radix.c, we use the
non-constant value PTE_INDEX_SIZE to clear a PTE page.

We can instead use the constant RADIX_PTE_INDEX_SIZE, because we know
this code will only be running when the Radix MMU is active.

Note that we already use RADIX_PTE_INDEX_SIZE for the allocation of
kvm_pte_cache.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Leonardo Bras <leonardo@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

parent cd758a9b

arch/powerpc/kvm/book3s_64_mmu_radix.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -425,7 +425,7 @@ static void kvmppc_unmap_free_pte(struct kvm kvm, pte_t pte, bool full,
		unsigned int lpid)
		{
		if (full) {
		memset(pte, 0, sizeof(long) << PTE_INDEX_SIZE);
		memset(pte, 0, sizeof(long) << RADIX_PTE_INDEX_SIZE);
		} else {
		pte_t *p = pte;
		unsigned long it;

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