From: Avi Kivity <avi@redhat.com>
Date: Tue, 29 Dec 2009 15:33:58 +0000 (+0200)
Subject: KVM: VMX: trace clts and lmsw instructions as cr accesses
X-Git-Tag: v2.6.34-rc1~193^2~88
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a1f83a74feaa9718a5c61587256ea6cc1b993d16;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

KVM: VMX: trace clts and lmsw instructions as cr accesses

clts writes cr0.ts; lmsw writes cr0[0:15] - record that in ftrace.

Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 9b197b2..7c7b2ee 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2997,6 +2997,7 @@ 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;
@@ -3016,7 +3017,9 @@ 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;