Messages in this thread | | | Date | Fri, 15 Jul 2011 19:23:06 +0100 | Subject | Re: [Xen-devel] [PATCH] xen: update machine_to_phys_order on resume | From | Keir Fraser <> |
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On 15/07/2011 18:30, "Jan Beulich" <JBeulich@novell.com> wrote:
> Actually, one more thought: What's the purpose of this hypercall if > it is set in stone what values it ought to return? Isn't a guest using > it (supposed to be) advertising that it can deal with the values being > variable (and it was just overlooked so far that this doesn't only > include varying values from boot to boot, but also migration)? Or in > other words, if we found a need to relocate the M2P table or grow > its static maximum size, it would be impossible to migrate guests > from an old to a new hypervisor.
Fair point. There has to be a static fallback set of return values for old guests.
-- Keir
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