From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: [PATCH 1/5] KVM: VMX: trace clts and lmsw instructions as cr accesses Date: Wed, 30 Dec 2009 18:25:38 +0200 Message-ID: <1262190342-18611-2-git-send-email-avi@redhat.com> References: <1262190342-18611-1-git-send-email-avi@redhat.com> Cc: kvm@vger.kernel.org To: Marcelo Tosatti , Sheng Yang , Joerg Roedel Return-path: Received: from mx1.redhat.com ([209.132.183.28]:19805 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752256AbZL3QZr (ORCPT ); Wed, 30 Dec 2009 11:25:47 -0500 In-Reply-To: <1262190342-18611-1-git-send-email-avi@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: clts writes cr0.ts; lmsw writes cr0[0:15] - record that in ftrace. Signed-off-by: Avi Kivity --- arch/x86/kvm/vmx.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 2cc9b7e..f6d4298 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2987,6 +2987,7 @@ static int handle_cr(struct kvm_vcpu *vcpu) vmx_fpu_deactivate(vcpu); vcpu->arch.cr0 &= ~X86_CR0_TS; vmcs_writel(CR0_READ_SHADOW, vcpu->arch.cr0); + trace_kvm_cr_write(0, vcpu->arch.cr0); vmx_fpu_activate(vcpu); skip_emulated_instruction(vcpu); return 1; @@ -3006,7 +3007,9 @@ static int handle_cr(struct kvm_vcpu *vcpu) } break; case 3: /* lmsw */ - kvm_lmsw(vcpu, (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f); + val = (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f; + trace_kvm_cr_write(0, (vcpu->arch.cr0 & ~0xful) | val); + kvm_lmsw(vcpu, val); skip_emulated_instruction(vcpu); return 1; -- 1.6.5.3