From: Nicușor Cîțu <ncitu@xxxxxxxxxxxxxxx>
This function is needed for the KVMI_EVENT_DESCRIPTOR event.
Signed-off-by: Nicușor Cîțu <ncitu@xxxxxxxxxxxxxxx>
Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
arch/x86/kvm/svm.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index f9185f0b0c2b..fd21439475b5 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -4792,6 +4792,13 @@ static int avic_unaccelerated_access_interception(struct vcpu_svm *svm)
return ret;
}
+static int descriptor_access_interception(struct vcpu_svm *svm)
+{
+ struct kvm_vcpu *vcpu = &svm->vcpu;
+
+ return kvm_emulate_instruction(vcpu, 0);
+}
+
static int (*const svm_exit_handlers[])(struct vcpu_svm *svm) = {
[SVM_EXIT_READ_CR0] = cr_interception,
[SVM_EXIT_READ_CR3] = cr_interception,
@@ -4858,6 +4865,14 @@ static int (*const svm_exit_handlers[])(struct vcpu_svm *svm) = {
[SVM_EXIT_RSM] = rsm_interception,
[SVM_EXIT_AVIC_INCOMPLETE_IPI] = avic_incomplete_ipi_interception,
[SVM_EXIT_AVIC_UNACCELERATED_ACCESS] = avic_unaccelerated_access_interception,
+ [SVM_EXIT_IDTR_READ] = descriptor_access_interception,
+ [SVM_EXIT_GDTR_READ] = descriptor_access_interception,
+ [SVM_EXIT_LDTR_READ] = descriptor_access_interception,
+ [SVM_EXIT_TR_READ] = descriptor_access_interception,
+ [SVM_EXIT_IDTR_WRITE] = descriptor_access_interception,
+ [SVM_EXIT_GDTR_WRITE] = descriptor_access_interception,
+ [SVM_EXIT_LDTR_WRITE] = descriptor_access_interception,
+ [SVM_EXIT_TR_WRITE] = descriptor_access_interception,
};
static void dump_vmcb(struct kvm_vcpu *vcpu)
