RE: [PATCH v5 11/11] KVM: x86: Disable Intel Processor Trace when VMXON in L1 guest

[Kang, Luwei]

> > +	if (pt_mode == PT_MODE_HOST_GUEST) {
> 
> This would be vmx_pt_supported(), but I think it's better to remove that function and just test pt_mode ==
> PT_MODE_HOST_GUEST everywhere (or !=).

Hi Paolo,
    There have so many vmx_pt_supported() invoked in MSRs read/write (patch 9) patch and I think it can be replaced by  pt_mode check.
    But I think this function need to be reserved in patch 5(cpuid emulation). What is your opinion?

Thanks,
Luwei Kang

> 
> Paolo
> 
> > +		vmx->pt_desc.guest.ctl = 0;
> > +		vmcs_write64(GUEST_IA32_RTIT_CTL, 0);
> > +		pt_set_intercept_for_msr(vmx, 1);
> > +	}
> > +