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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>
This commit is contained in:
Michael Ellerman 2020-02-18 15:36:50 +11:00 committed by Paul Mackerras
parent cd758a9b57
commit afd313564c
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kvm/book3s_64_mmu_radix.c
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@ -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;