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KVM: Record instruction set in kvm_exit tracepoint 

exit_reason's meaning depend on the instruction set; record it so a trace
taken on one machine can be interpreted on another.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2010-11-17 18:44:19 +02:00
parent bd2b53b20f
commit aa17911e3c
3 changed files with 9 additions and 4 deletions
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2
arch/x86/kvm/svm.c
View File

@ -2980,7 +2980,7 @@ static int handle_exit(struct kvm_vcpu *vcpu)
struct kvm_run *kvm_run = vcpu->run;
u32 exit_code = svm->vmcb->control.exit_code;
trace_kvm_exit(exit_code, vcpu);
trace_kvm_exit(exit_code, vcpu, KVM_ISA_SVM);
if (!(svm->vmcb->control.intercept_cr_write & INTERCEPT_CR0_MASK))
vcpu->arch.cr0 = svm->vmcb->save.cr0;

9
arch/x86/kvm/trace.h
View File

@ -178,21 +178,26 @@ TRACE_EVENT(kvm_apic,
#define trace_kvm_apic_read(reg, val) trace_kvm_apic(0, reg, val)
#define trace_kvm_apic_write(reg, val) trace_kvm_apic(1, reg, val)
#define KVM_ISA_VMX 1
#define KVM_ISA_SVM 2
/*
* Tracepoint for kvm guest exit:
*/
TRACE_EVENT(kvm_exit,
TP_PROTO(unsigned int exit_reason, struct kvm_vcpu *vcpu),
TP_ARGS(exit_reason, vcpu),
TP_PROTO(unsigned int exit_reason, struct kvm_vcpu *vcpu, u32 isa),
TP_ARGS(exit_reason, vcpu, isa),
TP_STRUCT__entry(
__field( unsigned int, exit_reason )
__field( unsigned long, guest_rip )
__field( u32, isa )
),
TP_fast_assign(
__entry->exit_reason = exit_reason;
__entry->guest_rip = kvm_rip_read(vcpu);
__entry->isa = isa;
),
TP_printk("reason %s rip 0x%lx",

2
arch/x86/kvm/vmx.c
View File

@ -3700,7 +3700,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
u32 exit_reason = vmx->exit_reason;
u32 vectoring_info = vmx->idt_vectoring_info;
trace_kvm_exit(exit_reason, vcpu);
trace_kvm_exit(exit_reason, vcpu, KVM_ISA_VMX);
/* If guest state is invalid, start emulating */
if (vmx->emulation_required && emulate_invalid_guest_state)