lkml.org 
[lkml]   [2011]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [Xen-devel] [PATCH] xen: update machine_to_phys_order on resume
From
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




\
 
 \ /
  Last update: 2011-07-15 20:25    [W:0.054 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site