diff options
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index c1c1b973e80..ad273468c08 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1112,9 +1112,18 @@ static int invalid_op_interception(struct vcpu_svm *svm, static int task_switch_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) { - pr_unimpl(&svm->vcpu, "%s: task switch is unsupported\n", __func__); - kvm_run->exit_reason = KVM_EXIT_UNKNOWN; - return 0; + u16 tss_selector; + + 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); } static int cpuid_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |