From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933072AbbI1Kmt (ORCPT ); Mon, 28 Sep 2015 06:42:49 -0400 Received: from mail-wi0-f177.google.com ([209.85.212.177]:33666 "EHLO mail-wi0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932756AbbI1KjV (ORCPT ); Mon, 28 Sep 2015 06:39:21 -0400 From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: bsd@redhat.com, Jason Wang , Gleb Natapov Subject: [FYI PATCH 11/20] kvm: add tracepoint for fast mmio Date: Mon, 28 Sep 2015 12:38:56 +0200 Message-Id: <1443436745-38086-12-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1443436745-38086-1-git-send-email-pbonzini@redhat.com> References: <1443436745-38086-1-git-send-email-pbonzini@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jason Wang Cc: Gleb Natapov Cc: Paolo Bonzini Signed-off-by: Jason Wang Signed-off-by: Paolo Bonzini --- 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