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| author | Alexander Graf <agraf@suse.de> | 2010-04-16 00:11:49 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-17 12:18:40 +0300 |
| commit | 33fd27c7d26ec869f637634526e7293027bd8746 (patch) | |
| tree | 572ddc5cff8ad38114976768b92f994556f77f4a /arch/powerpc/kvm/book3s_64_mmu_host.c | |
| parent | 53e5b8bbbd0d0305234b2cfeae400183db98f993 (diff) | |
| download | linux-33fd27c7d26ec869f637634526e7293027bd8746.tar.gz linux-33fd27c7d26ec869f637634526e7293027bd8746.tar.bz2 linux-33fd27c7d26ec869f637634526e7293027bd8746.zip | |
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>
Diffstat (limited to 'arch/powerpc/kvm/book3s_64_mmu_host.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_host.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c index 0eea589dbef0..b23015438371 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_host.c +++ b/arch/powerpc/kvm/book3s_64_mmu_host.c @@ -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) |