Commit 03116aa5 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Avi Kivity
Browse files

KVM: MMU: skip invalid sp when unprotect page 



In kvm_mmu_unprotect_page(), the invalid sp can be skipped

Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 518c8aee

arch/x86/kvm/mmu.c

+1 −1
Original line number Diff line number Diff line
@@ -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;