diff options
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index de741043c5b1..bba67b70c4b0 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1825,17 +1825,28 @@ static int task_switch_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) { u16 tss_selector; + int reason; + int int_type = svm->vmcb->control.exit_int_info & + SVM_EXITINTINFO_TYPE_MASK; tss_selector = (u16)svm->vmcb->control.exit_info_1; + if (svm->vmcb->control.exit_info_2 & (1ULL << SVM_EXITINFOSHIFT_TS_REASON_IRET)) - return kvm_task_switch(&svm->vcpu, tss_selector, - TASK_SWITCH_IRET); - if (svm->vmcb->control.exit_info_2 & - (1ULL << SVM_EXITINFOSHIFT_TS_REASON_JMP)) - return kvm_task_switch(&svm->vcpu, tss_selector, - TASK_SWITCH_JMP); - return kvm_task_switch(&svm->vcpu, tss_selector, TASK_SWITCH_CALL); + reason = TASK_SWITCH_IRET; + else if (svm->vmcb->control.exit_info_2 & + (1ULL << SVM_EXITINFOSHIFT_TS_REASON_JMP)) + reason = TASK_SWITCH_JMP; + else if (svm->vmcb->control.exit_int_info & SVM_EXITINTINFO_VALID) + reason = TASK_SWITCH_GATE; + else + reason = TASK_SWITCH_CALL; + + + if (reason != TASK_SWITCH_GATE || int_type == SVM_EXITINTINFO_TYPE_SOFT) + skip_emulated_instruction(&svm->vcpu); + + return kvm_task_switch(&svm->vcpu, tss_selector, reason); } static int cpuid_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |