Re: [Xen-devel] [PATCH v6 24/29] xen/x86: allow HVM guests to use hypercalls to bring up vCPUs

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 29.09.15 at 12:25, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 29/09/15 11:07, Jan Beulich wrote:
>>>>> On 29.09.15 at 12:00, <andrew.cooper3@xxxxxxxxxx> wrote:
>>> Therefore, we are back to the question of whether to provide all segment
>>> registers, or specify a flat layout without specific selector values.  I
>>> would prefer the former to the latter.
>> If we don't go the CS+SS only route, then yes, I'd too prefer
>> completing the set (I would probably agree with not adding FS
>> and GS, and even recommend against it in the 64-bit variant,
>> but I do insist on ES in that case).
> 
> I would still err on the CS/SS/DS/ES side given a straight choice.  It
> offers more flexibility for rarer usecases.

Okay, all four of them then for 32-bit, and just CS and SS for 64-bit?

Jan


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