Re: [Xen-devel] [PATCH 00/11] Alternate p2m: support multiple copies of host p2m

[Tamas K Lengyel <tamas.lengyel@xxxxxxxxxxxx>]

On Thu, Jan 15, 2015 at 6:31 PM, Ed White <edmund.h.white@xxxxxxxxx> wrote:
> On 01/15/2015 02:39 AM, Tamas K Lengyel wrote:
>>> There are ways of avoiding the
>>> single-step too, although I don't think that falls within the scope
>>> of this conversation.
>>>
>>> Ed
>>
>> I would be very interested in knowing how we can avoid the singlestep
>> phase. Are you envisioning using this with a split-TLB? IMHO this is a
>> pretty critical component of effectively using the new feature so
>> should be within scope of this discussion.
>>
>
> It's an optimization certainly, but it's not required, and it's not
> a technique we have placed in the public domain. You could try talking
> to us under NDA or figure it out for yourself, but I can't detail
> it here.
>
> Ed

That's unfortunate. I would have been happy to extend the xen-access
test tool to exercise this feature but contributing code that is known
to be sub-optimal from the beginning just doesn't feel right.

Tamas

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