[07/12] KVM: nVMX: Add tracepoints for nested_vmexit and nested_vmexit_inject

Commit Message

Jan Kiszka Jan. 4, 2014, 5:47 p.m. UTC

From: Jan Kiszka <[e-mail]>

Used von SVM introduced for tracing nested vmexit: kvm_nested_vmexit
marks exits from L2 to L0 while kvm_nested_vmexit_inject marks vmexits
that are reflected to L1.

Signed-off-by: Jan Kiszka <[e-mail]>
---
 arch/x86/kvm/vmx.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

Patch

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 0bd0509..9cd6eb7 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6701,6 +6701,13 @@  static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu)
 	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
 	u32 exit_reason = vmx->exit_reason;
 
+	trace_kvm_nested_vmexit(kvm_rip_read(vcpu), exit_reason,
+				vmcs_readl(EXIT_QUALIFICATION),
+				vmx->idt_vectoring_info,
+				intr_info,
+				vmcs_read32(VM_EXIT_INTR_ERROR_CODE),
+				KVM_ISA_VMX);
+
 	if (vmx->nested.nested_run_pending)
 		return 0;
 
@@ -8472,6 +8479,13 @@  static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
 	prepare_vmcs12(vcpu, vmcs12, exit_reason, exit_intr_info,
 		       exit_qualification);
 
+	trace_kvm_nested_vmexit_inject(vmcs12->vm_exit_reason,
+				       vmcs12->exit_qualification,
+				       vmcs12->idt_vectoring_info_field,
+				       vmcs12->vm_exit_intr_info,
+				       vmcs12->vm_exit_intr_error_code,
+				       KVM_ISA_VMX);
+
 	cpu = get_cpu();
 	vmx->loaded_vmcs = &vmx->vmcs01;
 	vmx_vcpu_put(vcpu);