KVM: x86: fix CR8 handling

[mirror_ubuntu-artful-kernel.git] / arch / x86 / kvm / svm.c

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 73461b1cfb0579084f4a48b051ac4bf893fff8bb..3d4b88af50f9db230fbfb0ba2a5a93d9ada61bae 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2676,16 +2676,17 @@ static int cr0_write_interception(struct vcpu_svm *svm)
 static int cr8_write_interception(struct vcpu_svm *svm)
 {
        struct kvm_run *kvm_run = svm->vcpu.run;
+       int r;
 
        u8 cr8_prev = kvm_get_cr8(&svm->vcpu);
        /* instruction emulation calls kvm_set_cr8() */
-       emulate_instruction(&svm->vcpu, 0, 0, 0);
+       r = emulate_instruction(&svm->vcpu, 0, 0, 0);
        if (irqchip_in_kernel(svm->vcpu.kvm)) {
                clr_cr_intercept(svm, INTERCEPT_CR8_WRITE);
-               return 1;
+               return r == EMULATE_DONE;
        }
        if (cr8_prev <= kvm_get_cr8(&svm->vcpu))
-               return 1;
+               return r == EMULATE_DONE;
        kvm_run->exit_reason = KVM_EXIT_SET_TPR;
        return 0;
 }