Commit cc167bd7 authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
Browse files

KVM: x86: Use common definition for kvm_nested_vmexit tracepoint 



Use the newly introduced TRACE_EVENT_KVM_EXIT to define the guts of
kvm_nested_vmexit so that it captures and prints the same information as
kvm_exit.  This has the bonus side effect of fixing the interrupt info
and error code printing for the case where they're invalid, e.g. if the
exit was a failed VM-Entry.  This also sets the stage for retrieving
EXIT_QUALIFICATION and VM_EXIT_INTR_INFO in nested_vmx_reflect_vmexit()
if and only if the VM-Exit is being routed to L1.

Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200923201349.16097-7-sean.j.christopherson@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 029e8c8a

arch/x86/kvm/svm/svm.c

+1 −6
Original line number Diff line number Diff line
@@ -2996,12 +2996,7 @@ static int handle_exit(struct kvm_vcpu *vcpu, fastpath_t exit_fastpath) 
	if (is_guest_mode(vcpu)) {

		int vmexit;



		trace_kvm_nested_vmexit(vcpu, exit_code,

					svm->vmcb->control.exit_info_1,

					svm->vmcb->control.exit_info_2,

					svm->vmcb->control.exit_int_info,

					svm->vmcb->control.exit_int_info_err,

					KVM_ISA_SVM);

		trace_kvm_nested_vmexit(exit_code, vcpu, KVM_ISA_SVM);



		vmexit = nested_svm_exit_special(svm);

arch/x86/kvm/trace.h

+1 −33
Original line number Diff line number Diff line
@@ -586,39 +586,7 @@ TRACE_EVENT(kvm_nested_intercepts, 
/*

 * Tracepoint for #VMEXIT while nested

 */

TRACE_EVENT(kvm_nested_vmexit,

	    TP_PROTO(struct kvm_vcpu *vcpu, __u32 exit_code,

		     __u64 exit_info1, __u64 exit_info2,

		     __u32 exit_int_info, __u32 exit_int_info_err, __u32 isa),

	    TP_ARGS(vcpu, exit_code, exit_info1, exit_info2,

		    exit_int_info, exit_int_info_err, isa),



	TP_STRUCT__entry(

		__field(	__u64,		rip			)

		__field(	__u32,		exit_code		)

		__field(	__u64,		exit_info1		)

		__field(	__u64,		exit_info2		)

		__field(	__u32,		exit_int_info		)

		__field(	__u32,		exit_int_info_err	)

		__field(	__u32,		isa			)

	),



	TP_fast_assign(

		__entry->rip			= kvm_rip_read(vcpu);

		__entry->exit_code		= exit_code;

		__entry->exit_info1		= exit_info1;

		__entry->exit_info2		= exit_info2;

		__entry->exit_int_info		= exit_int_info;

		__entry->exit_int_info_err	= exit_int_info_err;

		__entry->isa			= isa;

	),

	TP_printk("rip: 0x%016llx reason: %s%s%s ext_inf1: 0x%016llx "

		  "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x",

		  __entry->rip,

		  kvm_print_exit_reason(__entry->exit_code, __entry->isa),

		  __entry->exit_info1, __entry->exit_info2,

		  __entry->exit_int_info, __entry->exit_int_info_err)

);

TRACE_EVENT_KVM_EXIT(kvm_nested_vmexit);



/*

 * Tracepoint for #VMEXIT reinjected to the guest

arch/x86/kvm/vmx/nested.c

+1 −4
Original line number Diff line number Diff line
@@ -5937,10 +5937,7 @@ bool nested_vmx_reflect_vmexit(struct kvm_vcpu *vcpu) 
	exit_intr_info = vmx_get_intr_info(vcpu);

	exit_qual = vmx_get_exit_qual(vcpu);



	trace_kvm_nested_vmexit(vcpu, exit_reason, exit_qual,

				vmx->idt_vectoring_info, exit_intr_info,

				vmcs_read32(VM_EXIT_INTR_ERROR_CODE),

				KVM_ISA_VMX);

	trace_kvm_nested_vmexit(exit_reason, vcpu, KVM_ISA_VMX);



	/* If L0 (KVM) wants the exit, it trumps L1's desires. */

	if (nested_vmx_l0_wants_exit(vcpu, exit_reason))

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