hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
Wei Yongjun 2010-08-17 10:08:52 +08:00 committed by Avi Kivity
parent 8ec4722dd2
commit 646bab55a2
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/powerpc/kvm/book3s.c
View File

@ -455,8 +455,10 @@ static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
int i; int i;
hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT); 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; return;
}
hpage_offset = pte->raddr & ~PAGE_MASK; hpage_offset = pte->raddr & ~PAGE_MASK;
hpage_offset &= ~0xFFFULL; hpage_offset &= ~0xFFFULL;