From: Jason Wang <jasowang@redhat.com>
To: gleb@kernel.org, pbonzini@redhat.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: mst@redhat.com, cornelia.huck@de.ibm.com,
Jason Wang <jasowang@redhat.com>
Subject: [PATCH V4 4/4] kvm: add tracepoint for fast mmio
Date: Fri, 11 Sep 2015 11:17:37 +0800 [thread overview]
Message-ID: <1441941457-23630-5-git-send-email-jasowang@redhat.com> (raw)
In-Reply-To: <1441941457-23630-1-git-send-email-jasowang@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
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 4eae7c3..ce4abe3 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 4a4eec30..cb505b9 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5767,6 +5767,7 @@ 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 1e7e76e..f7c4042 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8013,6 +8013,7 @@ 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:[~2015-09-11 3:18 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-11 3:17 [PATCH V4 0/4] Fast MMIO eventfd fixes Jason Wang
2015-09-11 3:17 ` [PATCH V4 1/4] kvm: factor out core eventfd assign/deassign logic Jason Wang
2015-09-11 7:39 ` Cornelia Huck
2015-09-11 8:17 ` Paolo Bonzini
2015-09-11 9:14 ` Jason Wang
2015-09-11 3:17 ` [PATCH V4 2/4] kvm: fix double free for fast mmio eventfd Jason Wang
2015-09-11 7:46 ` Cornelia Huck
2015-09-11 9:25 ` Jason Wang
2015-09-11 10:19 ` Cornelia Huck
2015-09-11 3:17 ` [PATCH V4 3/4] kvm: fix zero length mmio searching Jason Wang
2015-09-11 8:26 ` Paolo Bonzini
2015-09-11 8:31 ` Cornelia Huck
2015-09-11 9:26 ` Jason Wang
2015-09-11 3:17 ` Jason Wang [this message]
2015-09-11 8:15 ` [PATCH V4 0/4] Fast MMIO eventfd fixes Michael S. Tsirkin
2015-09-11 8:33 ` Paolo Bonzini
2015-09-11 9:28 ` Jason Wang
2015-09-13 8:51 ` Michael S. Tsirkin
2015-09-13 8:52 ` Michael S. Tsirkin
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