Re: [RFC PATCH 0/3] generic hypercall support

Gregory Haskins
2009-05-07T19:12:26Z

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Chris Wright wrote:
> * Avi Kivity (avi@redhat.com) wrote:
>
>> Gregory Haskins wrote:
>>
>>> Cool, I will code this up and submit it. While Im at it, Ill run it
>>> through the "nullio" ringer, too. ;) It would be cool to see the
>>> pv-mmio hit that 2.07us number. I can't think of any reason why this
>>> will not be the case.
>>>
>> Don't - it's broken. It will also catch device assignment mmio and
>> hypercall them.
>>
>
> Not necessarily. It just needs to be creative w/ IO_COND
>

Hi Chris,
Could you elaborate? How would you know which pages to hypercall and
which to let PF?

-Greg

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