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 <[email protected]> --- arch/x86/kvm/svm.c | 2 +- arch/x86/kvm/trace.h | 18 ++++++++++++++++++ arch/x86/kvm/x86.c | 1 + 3 files changed, 20 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 369eeb8..78a391c 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -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; } diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index a00b235..20248a1 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -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 */ diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 4f90d45..877f910 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4983,3 +4983,4 @@ 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); -- 1.6.4.3 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
