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SubjectRe: [PATCH v3 8/9] KVM: x86: Disable Intel Processor Trace when VMXON in L1 guest
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On 27/11/2017 21:24, Luwei Kang wrote:
>
> + if (pt_mode == PT_MODE_HOST_GUEST) {
> + vmx->pt_desc.guest.ctl &= ~RTIT_CTL_TRACEEN;
> + pt_disable_intercept_for_msr(FALSE);
> + vmcs_write64(GUEST_IA32_RTIT_CTL, vmx->pt_desc.guest.ctl);
> + }
> +

Using vmx_set_msr would be nicer. Alternatively, extract this:

+ pt_disable_intercept_for_msr(data & RTIT_CTL_TRACEEN);
+ vmcs_write64(GUEST_IA32_RTIT_CTL, data);
+ vmx->pt_desc.guest.ctl = data;

into a new function vmx_set_rtit_ctl(vcpu, data), and call it here.

Thanks,

Paolo

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