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| author | Avi Kivity <avi@redhat.com> | 2010-03-11 13:01:59 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-17 12:15:27 +0300 |
| commit | 5c1c85d08da5c257b21b0423b96fa6554aa4cb6f (patch) | |
| tree | 4ee236dd52b4a534e84b45894507ee3656468609 /arch | |
| parent | 5bfd8b5455e69b37af16a2df1edae2c3b567648c (diff) | |
| download | linux-3.10-5c1c85d08da5c257b21b0423b96fa6554aa4cb6f.tar.gz linux-3.10-5c1c85d08da5c257b21b0423b96fa6554aa4cb6f.tar.bz2 linux-3.10-5c1c85d08da5c257b21b0423b96fa6554aa4cb6f.zip | |
KVM: Trace exception injection
Often an exception can help point out where things start to go wrong.
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/trace.h | 32 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
2 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index d10b359a21f..32c912c40bf 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -219,6 +219,38 @@ TRACE_EVENT(kvm_inj_virq, TP_printk("irq %u", __entry->irq) ); +#define EXS(x) { x##_VECTOR, "#" #x } + +#define kvm_trace_sym_exc \ + EXS(DE), EXS(DB), EXS(BP), EXS(OF), EXS(BR), EXS(UD), EXS(NM), \ + EXS(DF), EXS(TS), EXS(NP), EXS(SS), EXS(GP), EXS(PF), \ + EXS(MF), EXS(MC) + +/* + * Tracepoint for kvm interrupt injection: + */ +TRACE_EVENT(kvm_inj_exception, + TP_PROTO(unsigned exception, bool has_error, unsigned error_code), + TP_ARGS(exception, has_error, error_code), + + TP_STRUCT__entry( + __field( u8, exception ) + __field( u8, has_error ) + __field( u32, error_code ) + ), + + TP_fast_assign( + __entry->exception = exception; + __entry->has_error = has_error; + __entry->error_code = error_code; + ), + + TP_printk("%s (0x%x)", + __print_symbolic(__entry->exception, kvm_trace_sym_exc), + /* FIXME: don't print error_code if not present */ + __entry->has_error ? __entry->error_code : 0) +); + /* * Tracepoint for page fault. */ diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 74e70d975ff..a1cf87fe9f3 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4237,6 +4237,9 @@ static void inject_pending_event(struct kvm_vcpu *vcpu) { /* try to reinject previous events if any */ if (vcpu->arch.exception.pending) { + trace_kvm_inj_exception(vcpu->arch.exception.nr, + vcpu->arch.exception.has_error_code, + vcpu->arch.exception.error_code); kvm_x86_ops->queue_exception(vcpu, vcpu->arch.exception.nr, vcpu->arch.exception.has_error_code, vcpu->arch.exception.error_code); |