From: Nicușor Cîțu <nicu.citu@xxxxxxxxxx>
This function is needed for the KVMI_VCPU_EVENT_DESCRIPTOR event.
Signed-off-by: Nicușor Cîțu <nicu.citu@xxxxxxxxxx>
Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
arch/x86/kvm/svm/svm.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index f3ee6bad0db5..00bda794609c 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -2335,6 +2335,13 @@ static int rsm_interception(struct vcpu_svm *svm)
return kvm_emulate_instruction_from_buffer(&svm->vcpu, rsm_ins_bytes, 2);
}
+static int descriptor_access_interception(struct vcpu_svm *svm)
+{
+ struct kvm_vcpu *vcpu = &svm->vcpu;
+
+ return kvm_emulate_instruction(vcpu, 0);
+}
+
static int rdpmc_interception(struct vcpu_svm *svm)
{
int err;
@@ -2959,6 +2966,14 @@ 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)
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