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KVM: SVM: Add tracepoint for nested vmrun

Browse source 
This patch adds a dedicated kvm tracepoint for a nested
vmrun.

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 16:08:27 +02:00 committed by Avi Kivity
parent cd3ff653ae
commit 0ac406de8f
3 changed files with 40 additions and 0 deletions
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6
arch/x86/kvm/svm.c
View file

@ -1726,6 +1726,12 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)
/* nested_vmcb is our indicator if nested SVM is activated */
svm->nested.vmcb = svm->vmcb->save.rax;
trace_kvm_nested_vmrun(svm->vmcb->save.rip - 3, svm->nested.vmcb,
nested_vmcb->save.rip,
nested_vmcb->control.int_ctl,
nested_vmcb->control.event_inj,
nested_vmcb->control.nested_ctl);
/* Clear internal status */
kvm_clear_exception_queue(&svm->vcpu);
kvm_clear_interrupt_queue(&svm->vcpu);

33
arch/x86/kvm/trace.h
View file

@ -349,6 +349,39 @@ TRACE_EVENT(kvm_apic_accept_irq,
__entry->coalesced ? " (coalesced)" : "")
);
/*
* Tracepoint for nested VMRUN
*/
TRACE_EVENT(kvm_nested_vmrun,
TP_PROTO(__u64 rip, __u64 vmcb, __u64 nested_rip, __u32 int_ctl,
__u32 event_inj, bool npt),
TP_ARGS(rip, vmcb, nested_rip, int_ctl, event_inj, npt),
TP_STRUCT__entry(
__field( __u64, rip )
__field( __u64, vmcb )
__field( __u64, nested_rip )
__field( __u32, int_ctl )
__field( __u32, event_inj )
__field( bool, npt )
),
TP_fast_assign(
__entry->rip = rip;
__entry->vmcb = vmcb;
__entry->nested_rip = nested_rip;
__entry->int_ctl = int_ctl;
__entry->event_inj = event_inj;
__entry->npt = npt;
),
TP_printk("rip: 0x%016llx vmcb: 0x%016llx nrip: 0x%016llx int_ctl: 0x%08x "
"event_inj: 0x%08x npt: %s\n",
__entry->rip, __entry->vmcb, __entry->nested_rip,
__entry->int_ctl, __entry->event_inj,
__entry->npt ? "on" : "off")
);
#endif /* _TRACE_KVM_H */
/* This part must be outside protection */

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

@ -4984,3 +4984,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_inj_virq);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_page_fault);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_msr);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_cr);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmrun);