diff options
| author | Jason Wang <jasowang@redhat.com> | 2015-09-15 14:41:58 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-10-01 15:06:30 +0200 |
| commit | 931c33b178b091cced2a6b3f57f04655f8ff5207 (patch) | |
| tree | b10a00eb94b1976e801a93293324c92f8484a84f /arch/x86/kvm | |
| parent | d3febddde9c7a959dbb189a700e937db50fad4d6 (diff) | |
| download | linux-931c33b178b091cced2a6b3f57f04655f8ff5207.tar.bz2 | |
kvm: add tracepoint for fast mmio
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/trace.h | 18 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 1 |
3 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index 4eae7c35ddf5..ce4abe333c39 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -129,6 +129,24 @@ TRACE_EVENT(kvm_pio, ); /* + * Tracepoint for fast mmio. + */ +TRACE_EVENT(kvm_fast_mmio, + TP_PROTO(u64 gpa), + TP_ARGS(gpa), + + TP_STRUCT__entry( + __field(u64, gpa) + ), + + TP_fast_assign( + __entry->gpa = gpa; + ), + + TP_printk("fast mmio at gpa 0x%llx", __entry->gpa) +); + +/* * Tracepoint for cpuid. */ TRACE_EVENT(kvm_cpuid, diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 6ee0dc69675b..324b09ff1def 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5756,6 +5756,7 @@ static int handle_ept_misconfig(struct kvm_vcpu *vcpu) gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); if (!kvm_io_bus_write(vcpu, KVM_FAST_MMIO_BUS, gpa, 0, NULL)) { skip_emulated_instruction(vcpu); + trace_kvm_fast_mmio(gpa); return 1; } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8b97c54edebc..b90ad01c617d 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -8070,6 +8070,7 @@ bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) EXPORT_SYMBOL_GPL(kvm_arch_has_noncoherent_dma); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_exit); +EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_fast_mmio); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_inj_virq); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_page_fault); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_msr); |