[PATCH] KVM: SVM: Propagate cpu shutdown events to userspace
[linux-2.6.git] / drivers / kvm / svm.c
index 717aabb..9c70ff6 100644 (file)
@@ -502,6 +502,7 @@ static void init_vmcb(struct vmcb *vmcb)
                                (1ULL << INTERCEPT_IOIO_PROT) |
                                (1ULL << INTERCEPT_MSR_PROT) |
                                (1ULL << INTERCEPT_TASK_SWITCH) |
+                               (1ULL << INTERCEPT_SHUTDOWN) |
                                (1ULL << INTERCEPT_VMRUN) |
                                (1ULL << INTERCEPT_VMMCALL) |
                                (1ULL << INTERCEPT_VMLOAD) |
@@ -892,6 +893,19 @@ static int pf_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
        return 0;
 }
 
+static int shutdown_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+{
+       /*
+        * VMCB is undefined after a SHUTDOWN intercept
+        * so reinitialize it.
+        */
+       memset(vcpu->svm->vmcb, 0, PAGE_SIZE);
+       init_vmcb(vcpu->svm->vmcb);
+
+       kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
+       return 0;
+}
+
 static int io_get_override(struct kvm_vcpu *vcpu,
                          struct vmcb_seg **seg,
                          int *addr_override)
@@ -1249,6 +1263,7 @@ static int (*svm_exit_handlers[])(struct kvm_vcpu *vcpu,
        [SVM_EXIT_IOIO]                         = io_interception,
        [SVM_EXIT_MSR]                          = msr_interception,
        [SVM_EXIT_TASK_SWITCH]                  = task_switch_interception,
+       [SVM_EXIT_SHUTDOWN]                     = shutdown_interception,
        [SVM_EXIT_VMRUN]                        = invalid_op_interception,
        [SVM_EXIT_VMMCALL]                      = invalid_op_interception,
        [SVM_EXIT_VMLOAD]                       = invalid_op_interception,