From: Jason Wang <jasowang@xxxxxxxxxx>
Cc: Gleb Natapov <gleb@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
arch/x86/kvm/trace.h | 18 ++++++++++++++++++
arch/x86/kvm/vmx.c | 1 +
arch/x86/kvm/x86.c | 1 +
3 files changed, 20 insertions(+)
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 90605f70a7d0..b2d619ab3d07 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 1264748e1cc4..b015ab357980 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8074,6 +8074,7 @@ 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);
--
1.8.3.1
--
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