Re: [Xen-devel] [PATCH v2 1/1] tools: Handle xc_maxmem adjustments

[George Dunlap <George.Dunlap@xxxxxxxxxxxxx>]

On Wed, Apr 15, 2015 at 11:16 AM, George Dunlap <dunlapg@xxxxxxxxx> wrote:
> Without having actually reviewed the patch, I think this solution is a
> decent one.  But if we could update it in the libxl domain config in a
> way that was backwards-compatible, that would be fine too.  I don't
> think we should change maxmem in the domain config -- I think there
> should be another field, maxpages or something, which talks about the
> hypervisor side.

One other advantage of the solution Don gives here is that it could
(in theory) handle the case where maxmem changes *while the guest is
migrating*.  I suspect actually that if you change maxmem during
migration at the moment, you may get some rather strange effects.
This would be especially important for things like COLO or remus.

 -George

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