[PATCH 17/39] KVM: VMX: trace clts and lmsw instructions as cr accesses
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From: Avi Kivity on 13 Feb 2010 03:20 clts writes cr0.ts; lmsw writes cr0[0:15] - record that in ftrace. Signed-off-by: Avi Kivity <avi(a)redhat.com> --- 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 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; -- 1.6.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |