Re: [Xen-devel] Page tables in Xen

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.

regarding shadowed PV domains, there's still
XENFEAT_auto_translated_physmap. but it's rather exotic and therefore
rarely used.

regarding the original question: yes, this means xen keeps the real page
tables, while guests map pseudo-physical (i.e. linear) memory in what
they (may) believe to be the real ones.

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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