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authorWei Yongjun <yjwei@cn.fujitsu.com>2010-08-17 10:08:52 +0800
committerAvi Kivity <avi@redhat.com>2010-10-24 10:51:05 +0200
commit646bab55a278ceb1cf43b1f80d3dd468be62a421 (patch)
tree413dd34c7282f69d422250cd48503c4ccc8e4831 /arch/powerpc
parent8ec4722dd2aab9b69befb919549ea0a5bfc9e670 (diff)
KVM: PPC: fix leakage of error page in kvmppc_patch_dcbz()
Add kvm_release_page_clean() after is_error_page() to avoid leakage of error page. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kvm/book3s.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index eee97b5a740..7656b6df0d8 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -455,8 +455,10 @@ static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
int i;
hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
- if (is_error_page(hpage))
+ if (is_error_page(hpage)) {
+ kvm_release_page_clean(hpage);
return;
+ }
hpage_offset = pte->raddr & ~PAGE_MASK;
hpage_offset &= ~0xFFFULL;