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KVM: PPC: Release clean pages as clean 

When we mapped a page as read-only, we can just release it as clean to
KVM's page claim mechanisms, because we're pretty sure it hasn't been
touched.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Alexander Graf 2010-04-16 00:11:49 +02:00 committed by Avi Kivity
parent 53e5b8bbbd
commit 33fd27c7d2
1 changed files with 5 additions and 1 deletions
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6
arch/powerpc/kvm/book3s_64_mmu_host.c
View File

@ -55,7 +55,11 @@ static void invalidate_pte(struct hpte_cache *pte)
MMU_PAGE_4K, MMU_SEGSIZE_256M,
false);
pte->host_va = 0;
kvm_release_pfn_dirty(pte->pfn);
if (pte->pte.may_write)
kvm_release_pfn_dirty(pte->pfn);
else
kvm_release_pfn_clean(pte->pfn);
}
void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, u64 guest_ea, u64 ea_mask)