[PATCH v12 10/77] KVM: svm: add support for descriptor-table VM-exits
From: Adalbert Lazăr <hidden>
Date: 2021-10-06 17:40:43
Also in:
kvm
Subsystem:
kernel virtual machine for x86 (kvm/x86), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Sean Christopherson, Paolo Bonzini, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: Nicușor Cîțu <redacted> This function is needed for the KVMI_VCPU_EVENT_DESCRIPTOR event. Signed-off-by: Nicușor Cîțu <redacted> Signed-off-by: Adalbert Lazăr <redacted> --- arch/x86/kvm/svm/svm.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index ce45fe0d35bc..e5cd8813cca6 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c@@ -2525,6 +2525,11 @@ static int emulate_on_interception(struct kvm_vcpu *vcpu) return kvm_emulate_instruction(vcpu, 0); } +static int descriptor_access_interception(struct kvm_vcpu *vcpu) +{ + return kvm_emulate_instruction(vcpu, 0); +} + static int rsm_interception(struct kvm_vcpu *vcpu) { return kvm_emulate_instruction_from_buffer(vcpu, rsm_ins_bytes, 2);
@@ -3231,6 +3236,14 @@ static int (*const svm_exit_handlers[])(struct kvm_vcpu *vcpu) = { [SVM_EXIT_AVIC_INCOMPLETE_IPI] = avic_incomplete_ipi_interception, [SVM_EXIT_AVIC_UNACCELERATED_ACCESS] = avic_unaccelerated_access_interception, [SVM_EXIT_VMGEXIT] = sev_handle_vmgexit, + [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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