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| author | Sean Christopherson <seanjc@google.com> | 2024-01-10 02:27:00 +0100 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-02-23 01:22:36 +0100 |
| commit | 9c9025ea003a03f967affd690f39b4ef3452c0f5 (patch) | |
| tree | d635ad8fce371040e9661b60207b876700bd6a6a /arch/x86/kvm/trace.h | |
| parent | KVM: x86: Open code all direct reads to guest DR6 and DR7 (diff) | |
| download | linux-9c9025ea003a03f967affd690f39b4ef3452c0f5.tar.xz linux-9c9025ea003a03f967affd690f39b4ef3452c0f5.zip | |
KVM: x86: Plumb "force_immediate_exit" into kvm_entry() tracepoint
Annotate the kvm_entry() tracepoint with "immediate exit" when KVM is
forcing a VM-Exit immediately after VM-Enter, e.g. when KVM wants to
inject an event but needs to first complete some other operation.
Knowing that KVM is (or isn't) forcing an exit is useful information when
debugging issues related to event injection.
Suggested-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20240110012705.506918-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/trace.h')
| -rw-r--r-- | arch/x86/kvm/trace.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index 83843379813e..88659de4d2a7 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -15,20 +15,23 @@ * Tracepoint for guest mode entry. */ TRACE_EVENT(kvm_entry, - TP_PROTO(struct kvm_vcpu *vcpu), - TP_ARGS(vcpu), + TP_PROTO(struct kvm_vcpu *vcpu, bool force_immediate_exit), + TP_ARGS(vcpu, force_immediate_exit), TP_STRUCT__entry( __field( unsigned int, vcpu_id ) __field( unsigned long, rip ) + __field( bool, immediate_exit ) ), TP_fast_assign( __entry->vcpu_id = vcpu->vcpu_id; __entry->rip = kvm_rip_read(vcpu); + __entry->immediate_exit = force_immediate_exit; ), - TP_printk("vcpu %u, rip 0x%lx", __entry->vcpu_id, __entry->rip) + TP_printk("vcpu %u, rip 0x%lx%s", __entry->vcpu_id, __entry->rip, + __entry->immediate_exit ? "[immediate exit]" : "") ); /* |