Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753484AbbHUIEQ (ORCPT ); Fri, 21 Aug 2015 04:04:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46092 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752575AbbHUIEL (ORCPT ); Fri, 21 Aug 2015 04:04:11 -0400 From: Jason Wang To: gleb@kernel.org, pbonzini@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jason Wang , "Michael S. Tsirkin" Subject: [PATCH 3/3] kvm: add tracepoint for fast mmio Date: Fri, 21 Aug 2015 16:03:53 +0800 Message-Id: <1440144233-29748-3-git-send-email-jasowang@redhat.com> In-Reply-To: <1440144233-29748-1-git-send-email-jasowang@redhat.com> References: <1440144233-29748-1-git-send-email-jasowang@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1935 Lines: 70 Cc: Gleb Natapov Cc: Paolo Bonzini Cc: Michael S. Tsirkin Signed-off-by: Jason Wang --- 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 5ef2560..271a0e6 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -8249,6 +8249,7 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/