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KVM: MMU: skip invalid sp when unprotect page

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In kvm_mmu_unprotect_page(), the invalid sp can be skipped

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiao Guangrong 2010-06-04 21:52:17 +08:00 committed by Avi Kivity
parent 518c8aee5c
commit 03116aa57e
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/mmu.c
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@ -1629,7 +1629,7 @@ static int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn)
bucket = &kvm->arch.mmu_page_hash[index];
restart:
hlist_for_each_entry_safe(sp, node, n, bucket, hash_link)
if (sp->gfn == gfn && !sp->role.direct) {
if (sp->gfn == gfn && !sp->role.direct && !sp->role.invalid) {
pgprintk("%s: gfn %lx role %x\n", __func__, gfn,
sp->role.word);
r = 1;