From: Jason Wang <jasowang@redhat.com>
To: gleb@kernel.org, pbonzini@redhat.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: cornelia.huck@de.ibm.com, Jason Wang <jasowang@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: [PATCH V2 3/3] kvm: add tracepoint for fast mmio
Date: Tue, 25 Aug 2015 15:47:15 +0800 [thread overview]
Message-ID: <1440488835-4388-3-git-send-email-jasowang@redhat.com> (raw)
In-Reply-To: <1440488835-4388-1-git-send-email-jasowang@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
arch/x86/kvm/trace.h | 17 +++++++++++++++++
arch/x86/kvm/vmx.c | 1 +
arch/x86/kvm/x86.c | 1 +
3 files changed, 19 insertions(+)
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 4eae7c3..2d4e81a 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -128,6 +128,23 @@ TRACE_EVENT(kvm_pio,
__entry->count > 1 ? "(...)" : "")
);
+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.
*/
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 83b7b5c..a55d279 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5831,6 +5831,7 @@ 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 8f0f6ec..36cf78e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8254,6 +8254,7 @@ 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);
--
2.1.4
next prev parent reply other threads:[~2015-08-25 7:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-25 7:47 [PATCH V2 1/3] kvm: use kmalloc() instead of kzalloc() during iodev register/unregister Jason Wang
2015-08-25 7:47 ` [PATCH V2 2/3] kvm: don't register wildcard MMIO EVENTFD on two buses Jason Wang
2015-08-25 8:20 ` Cornelia Huck
2015-08-25 9:06 ` Jason Wang
2015-08-25 11:33 ` Michael S. Tsirkin
2015-08-26 5:07 ` Jason Wang
2015-08-25 7:47 ` Jason Wang [this message]
2015-08-25 11:34 ` [PATCH V2 3/3] kvm: add tracepoint for fast mmio Michael S. Tsirkin
2015-08-26 5:08 ` Jason Wang
2015-08-25 15:29 ` [PATCH V2 1/3] kvm: use kmalloc() instead of kzalloc() during iodev register/unregister Joe Perches
2015-08-26 5:39 ` Jason Wang
2015-08-26 5:45 ` Joe Perches
2015-08-26 5:48 ` Jason Wang
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