Re: [Xen-devel] [PATCH v3 1/3] xen/pvh: enable mmu_update hypercall

[Roger Pau Monnà <roger.pau@xxxxxxxxxx>]

El 14/04/15 a les 13.55, Jan Beulich ha escrit:
>>>> On 10.04.15 at 19:29, <roger.pau@xxxxxxxxxx> wrote:
>> This is needed for performing save/restore of PV guests.
>>
>> Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
>> Cc: Tim Deegan <tim@xxxxxxx>
>> Cc: Jan Beulich <jbeulich@xxxxxxxx>
>> Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>> ---
>> Once migration v2 has been merged this patch can be reverted, since it
>> removes the need to use the MMU_MACHPHYS_UPDATE hypercall.
> 
> Didn't earlier discussion end with the request to limit PVH access to
> just this one sub-op?

My bad, from the last conversation I got the feeling that the other
sub-ops already had the needed checks so it was fine to enable them. I
know the checks are there, and using the other sub-ops from a PVH guest
should be fine, but I guess it's better to just enable what we really need.

Roger.


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