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authorAvi Kivity <avi@redhat.com>2010-11-18 06:09:54 -0500
committerAvi Kivity <avi@redhat.com>2011-01-12 04:29:41 -0500
commit586f9607962cd982293759a4e95ff06e75be5225 (patch)
treeefce3a218f0268e4a066d1621d594951d6ac569e /arch/x86/kvm/svm.c
parentaa17911e3c21b63e3bf94c580ed029d6dad816b4 (diff)
KVM: Add instruction-set-specific exit qualifications to kvm_exit trace
The exit reason alone is insufficient to understand exactly why an exit occured; add ISA-specific trace parameters for additional information. Because fetching these parameters is expensive on vmx, and because these parameters are fetched even if tracing is disabled, we fetch the parameters via a callback instead of as traditional trace arguments. Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
-rw-r--r--arch/x86/kvm/svm.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 78a23086e16d..28274cf307ba 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2974,6 +2974,14 @@ void dump_vmcb(struct kvm_vcpu *vcpu)
2974 2974
2975} 2975}
2976 2976
2977static void svm_get_exit_info(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2)
2978{
2979 struct vmcb_control_area *control = &to_svm(vcpu)->vmcb->control;
2980
2981 *info1 = control->exit_info_1;
2982 *info2 = control->exit_info_2;
2983}
2984
2977static int handle_exit(struct kvm_vcpu *vcpu) 2985static int handle_exit(struct kvm_vcpu *vcpu)
2978{ 2986{
2979 struct vcpu_svm *svm = to_svm(vcpu); 2987 struct vcpu_svm *svm = to_svm(vcpu);
@@ -3684,7 +3692,9 @@ static struct kvm_x86_ops svm_x86_ops = {
3684 .get_tdp_level = get_npt_level, 3692 .get_tdp_level = get_npt_level,
3685 .get_mt_mask = svm_get_mt_mask, 3693 .get_mt_mask = svm_get_mt_mask,
3686 3694
3695 .get_exit_info = svm_get_exit_info,
3687 .exit_reasons_str = svm_exit_reasons_str, 3696 .exit_reasons_str = svm_exit_reasons_str,
3697
3688 .get_lpage_level = svm_get_lpage_level, 3698 .get_lpage_level = svm_get_lpage_level,
3689 3699
3690 .cpuid_update = svm_cpuid_update, 3700 .cpuid_update = svm_cpuid_update,