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

[Haiwei Li]

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