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KVM: SVM: Add tracepoint for #vmexit because intr pending 

This patch adds a special tracepoint for the event that a
nested #vmexit is injected because kvm wants to inject an
interrupt into the guest.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Joerg Roedel 2009-10-09 16:08:30 +02:00 committed by Avi Kivity
parent 17897f3668
commit 236649de33
3 changed files with 20 additions and 1 deletions
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2
arch/x86/kvm/svm.c
View File

@ -1390,7 +1390,7 @@ static inline int nested_svm_intr(struct vcpu_svm *svm)
* the #vmexit here.
*/
svm->nested.exit_required = true;
nsvm_printk("VMexit -> INTR\n");
trace_kvm_nested_intr_vmexit(svm->vmcb->save.rip);
return 1;
}

18
arch/x86/kvm/trace.h
View File

@ -451,6 +451,24 @@ TRACE_EVENT(kvm_nested_vmexit_inject,
__entry->exit_info1, __entry->exit_info2,
__entry->exit_int_info, __entry->exit_int_info_err)
);
/*
* Tracepoint for nested #vmexit because of interrupt pending
*/
TRACE_EVENT(kvm_nested_intr_vmexit,
TP_PROTO(__u64 rip),
TP_ARGS(rip),
TP_STRUCT__entry(
__field( __u64, rip )
),
TP_fast_assign(
__entry->rip = rip
),
TP_printk("rip: 0x%016llx\n", __entry->rip)
);
#endif /* _TRACE_KVM_H */
/* This part must be outside protection */

1
arch/x86/kvm/x86.c
View File

@ -4987,3 +4987,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_cr);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmrun);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmexit);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmexit_inject);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_intr_vmexit);