Commit a1f83a74 authored by Avi Kivity's avatar Avi Kivity Committed by Marcelo Tosatti
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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: default avatarAvi Kivity <avi@redhat.com>
parent 4b5c9b7f

arch/x86/kvm/vmx.c

+4 −1
Original line number Diff line number Diff line
@@ -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;