Re: [PATCH] KVM: SVM: Add tracepoint for cr_interception

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Kindly ping. :)
On 20/9/4 19:25, Haiwei Li wrote:
From: Haiwei Li <lihaiwei@xxxxxxxxxxx>

Add trace_kvm_cr_write and trace_kvm_cr_read for svm.

Signed-off-by: Haiwei Li <lihaiwei@xxxxxxxxxxx>
---
  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



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