[PATCH v6 10/34] x86, x86/mm, x86/xen, olpc: Use __va() against just the physical address in cr3

[Tom Lendacky]

On 6/8/2017 3:51 PM, Boris Ostrovsky wrote:
> 
>>
>>> What may be needed is making sure X86_FEATURE_SME is not set for PV
>>> guests.
>>
>> And that may be something that Xen will need to control through either
>> CPUID or MSR support for the PV guests.
> 
> 
> Only on newer versions of Xen. On earlier versions (2-3 years old) leaf
> 0x80000007 is passed to the guest unchanged. And so is MSR_K8_SYSCFG.

The SME feature is in leaf 0x8000001f, is that leaf passed to the guest
unchanged?

Thanks,
Tom

> 
> -boris
>