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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>
This commit is contained in:
Haiwei Li 2020-09-04 19:25:29 +08:00 committed by Paolo Bonzini
parent 4e810adb53
commit 95b28ac9db
1 changed files with 2 additions and 0 deletions
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2
arch/x86/kvm/svm/svm.c
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@ -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);
}