Commit e097e5ff authored by Stefan Hajnoczi's avatar Stefan Hajnoczi Committed by Avi Kivity
Browse files

KVM: Record instruction set in all vmexit tracepoints 



The kvm_exit tracepoint recently added the isa argument to aid decoding
exit_reason.  The semantics of exit_reason depend on the instruction set
(vmx or svm) and the isa argument allows traces to be analyzed on other
machines.

Add the isa argument to kvm_nested_vmexit and kvm_nested_vmexit_inject
so these tracepoints can also be self-describing.

Signed-off-by: default avatarStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent d1613ad5

arch/x86/kvm/svm.c

+4 −2
Original line number Diff line number Diff line
@@ -2182,7 +2182,8 @@ static int nested_svm_vmexit(struct vcpu_svm *svm) 
				       vmcb->control.exit_info_1,

				       vmcb->control.exit_info_2,

				       vmcb->control.exit_int_info,

				       vmcb->control.exit_int_info_err);

				       vmcb->control.exit_int_info_err,

				       KVM_ISA_SVM);



	nested_vmcb = nested_svm_map(svm, svm->nested.vmcb, &page);

	if (!nested_vmcb)
@@ -3335,7 +3336,8 @@ static int handle_exit(struct kvm_vcpu *vcpu) 
					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);

					svm->vmcb->control.exit_int_info_err,

					KVM_ISA_SVM);



		vmexit = nested_svm_exit_special(svm);

arch/x86/kvm/trace.h

+8 −4
Original line number Diff line number Diff line
@@ -486,9 +486,9 @@ TRACE_EVENT(kvm_nested_intercepts, 
TRACE_EVENT(kvm_nested_vmexit,

	    TP_PROTO(__u64 rip, __u32 exit_code,

		     __u64 exit_info1, __u64 exit_info2,

		     __u32 exit_int_info, __u32 exit_int_info_err),

		     __u32 exit_int_info, __u32 exit_int_info_err, __u32 isa),

	    TP_ARGS(rip, exit_code, exit_info1, exit_info2,

		    exit_int_info, exit_int_info_err),

		    exit_int_info, exit_int_info_err, isa),



	TP_STRUCT__entry(

		__field(	__u64,		rip			)
@@ -497,6 +497,7 @@ TRACE_EVENT(kvm_nested_vmexit, 
		__field(	__u64,		exit_info2		)

		__field(	__u32,		exit_int_info		)

		__field(	__u32,		exit_int_info_err	)

		__field(	__u32,		isa			)

	),



	TP_fast_assign(
@@ -506,6 +507,7 @@ TRACE_EVENT(kvm_nested_vmexit, 
		__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 ext_inf1: 0x%016llx "

		  "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x",
@@ -522,9 +524,9 @@ TRACE_EVENT(kvm_nested_vmexit, 
TRACE_EVENT(kvm_nested_vmexit_inject,

	    TP_PROTO(__u32 exit_code,

		     __u64 exit_info1, __u64 exit_info2,

		     __u32 exit_int_info, __u32 exit_int_info_err),

		     __u32 exit_int_info, __u32 exit_int_info_err, __u32 isa),

	    TP_ARGS(exit_code, exit_info1, exit_info2,

		    exit_int_info, exit_int_info_err),

		    exit_int_info, exit_int_info_err, isa),



	TP_STRUCT__entry(

		__field(	__u32,		exit_code		)
@@ -532,6 +534,7 @@ TRACE_EVENT(kvm_nested_vmexit_inject, 
		__field(	__u64,		exit_info2		)

		__field(	__u32,		exit_int_info		)

		__field(	__u32,		exit_int_info_err	)

		__field(	__u32,		isa			)

	),



	TP_fast_assign(
@@ -540,6 +543,7 @@ TRACE_EVENT(kvm_nested_vmexit_inject, 
		__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("reason: %s ext_inf1: 0x%016llx "

CRA Git | Maintained and supported by SUSTech CRA and CCSE