Re: [Xen-devel] [PATCH v2] x86/vmx: Add command line option to enable EPT without PAT

["Aravindh Puthiyaparambil (aravindp)" <aravindp@xxxxxxxxx>]

>>>> +### ept\_without\_pat (Intel)
>>>> +> `= <boolean>`
>>>> +
>>>> +> Default: `false`
>>>> +
>>>> +Allow EPT to be enabled when PAT is not present.
>>>
>>>This is a little too broad and hence confusing statement: I'm pretty
>>>certain PAT (the MSR) gets implemented/emulated by hypervisors.
>>>What's needed here (and potentially missing in emulations) is the
>>>VMX feature VM_ENTRY_LOAD_GUEST_PAT, and it should be said
>>>so.
>>
>> OK, I will update the description to reflect that. What should I call the
>> option? ept_without_vmx_pat?
>
>I think I like Kevin's suggestion, e.g. "force-ept".

Sounds good. I will resubmit.

I guess in the future if we have more situations arising where we need to force 
ept, we could make "force_ept" in to a bitmask to have some granularity in 
forcing EPT to be turned on.

Thanks,
Aravindh

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