Re: [RFC PATCH 0/3] Xen hvm saving improvements

[George Dunlap <george.dunlap@eu.citrix.com>]

On 12/16/2013 09:44 AM, Ian Campbell wrote:
> On Mon, 2013-12-16 at 02:17 +0000, Andrew Cooper wrote:
>> This series is *very* RFC at the moment - it is only compile tested.  I would
>> very much appreciate review on the design. (and I shall see about sorting out
>> some dev testing tomorrow)
>>
>> The ultimate purpose is to fix that the fact that
>> XEN_DOMCTL_gethvmcontext_partial is very unreliable at providing the correct
>> subset of information.
>>
>> All the changes are supposed to be internal to Xen.  There should be no
>> difference at all to the result of XEN_DOMCTL_gethvmcontext (which can be used
>> as a useful dev test for the validity of the changes).
>>
>> George: As for whether this is intended for 4.5, I have no idea.  On the one
>> hand, it is fixing a hypercall which doesn't function correctly, but on the
>> other hand, it is a very large and complicated set of changes relevant to
>> migration.  Then again, the majority of the changes were largely mechanical,
>> and there is a simple test to prove whether there are bugs or not.  I shall
>> defer to others for comments on the risk/rewards of this series.
> IMHO this is obviously not 4.4 material at this stage. Apart from
> anything else we've been managing to release with these short comings
> for many years.

Indeed.

  -George