[PATCH] KVM: SVM: Add tracepoint for cr_interception

[Haiwei Li]

From: Haiwei Li <lihai...@tencent.com>

Add trace_kvm_cr_write and trace_kvm_cr_read for svm.

Signed-off-by: Haiwei Li <lihai...@tencent.com>
---
 arch/x86/kvm/svm/svm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 03dd7bac8034..2c6dea48ba62 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -2261,6 +2261,7 @@ 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))
@@ -2306,6 +2307,7 @@ 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);
 }
--
2.18.4