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>

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 7c7f03b..78a2308 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -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;

diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index a6544b8..1061022 100644 (file)
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -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",

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6bf807a..2495910 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -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)