| Message ID | 1303119773-3436-2-git-send-email-joerg.roedel@amd.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index a6bf2ad..de4bba9 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2799,6 +2799,9 @@ static int cr_interception(struct vcpu_svm *svm) case 0: if (!check_selective_cr0_intercepted(svm, val)) err = kvm_set_cr0(&svm->vcpu, val); + else + return 1; + break; case 3: err = kvm_set_cr3(&svm->vcpu, val);
This patch fixes a bug in the nested-svm path when decode-assists is available on the machine. After a selective-cr0 intercept is detected the rip is advanced unconditionally. This causes the l1-guest to continue running with an l2-rip. This bug was with the sel_cr0 unit-test on decode-assists capable hardware. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/kvm/svm.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)