From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751809AbbIKDSA (ORCPT ); Thu, 10 Sep 2015 23:18:00 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53786 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751731AbbIKDR6 (ORCPT ); Thu, 10 Sep 2015 23:17:58 -0400 From: Jason Wang 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 Subject: [PATCH V4 4/4] kvm: add tracepoint for fast mmio Date: Fri, 11 Sep 2015 11:17:37 +0800 Message-Id: <1441941457-23630-5-git-send-email-jasowang@redhat.com> In-Reply-To: <1441941457-23630-1-git-send-email-jasowang@redhat.com> References: <1441941457-23630-1-git-send-email-jasowang@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cc: Gleb Natapov Cc: Paolo Bonzini Signed-off-by: Jason Wang --- 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