KVM: SVM: Add tracepoint for cr_interception

Add trace_kvm_cr_write and trace_kvm_cr_read for svm.

Signed-off-by: Haiwei Li <lihaiwei@tencent.com>
Message-Id: <f3031602-db3b-c4fe-b719-d402663b0a2b@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index a788ce1..08adac8 100644 (file)
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -2277,6 +2277,7 @@ static int cr_interception(struct vcpu_svm *svm)
        if (cr >= 16) { /* mov to cr */
                cr -= 16;
                val = kvm_register_read(&svm->vcpu, reg);
+               trace_kvm_cr_write(cr, val);
                switch (cr) {
                case 0:
                        if (!check_selective_cr0_intercepted(svm, val))
@@ -2322,6 +2323,7 @@ static int cr_interception(struct vcpu_svm *svm)
                        return 1;
                }
                kvm_register_write(&svm->vcpu, reg, val);
+               trace_kvm_cr_read(cr, val);
        }
        return kvm_complete_insn_gp(&svm->vcpu, err);
 }