Re: [Xen-devel] Page tables in Xen

On Thu, 2007-11-29 at 09:26 +0000, Tim Deegan wrote:
> Hi,
> 
> At 06:49 +0100 on 29 Nov (1196318951), Daniel Stodden wrote:
> > On Thu, 2007-11-29 at 11:00 +0530, pradeep singh rautela wrote:
> > > On Nov 29, 2007 1:42 AM, Haifeng He <hehaifeng2nd@xxxxxxxxx> wrote:
> > > > Thanks for answering my question. I am talking about PV mode. What 
> > > > about shadow
> > > > page table? Does it mean, Xen will keep (real) copies of page tables?
> > > 
> > > Shadown page tables are employed in HVM guests not PV guests.
> 
> Shadow pagetables are also used when doing live migration of PV guests,
> but they don't do the automatic translation and reference-counting that
> they do for HVM guests.
> 
> > regarding shadowed PV domains, there's still
> > XENFEAT_auto_translated_physmap. but it's rather exotic and therefore
> > rarely used.
> 
> And therefore, AFAIK, doesn't work.

Which is why people depending on it are stuck with 3.0.2.

regards,
Daniel

-- 
Daniel Stodden
LRR     -      Lehrstuhl für Rechnertechnik und Rechnerorganisation
Institut für Informatik der TU München             D-85748 Garching
http://www.lrr.in.tum.de/~stodden         mailto:stodden@xxxxxxxxxx
PGP Fingerprint: F5A4 1575 4C56 E26A 0B33  3D80 457E 82AE B0D8 735B



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