* auto-translated-physmap resume
[not found] <E1ITcVL-000214-Ec@host-192-168-0-1-bcn-london>
@ 2007-09-25 20:25 ` Andres Lagar-Cavilla
2007-09-25 21:14 ` Ian Pratt
0 siblings, 1 reply; 4+ messages in thread
From: Andres Lagar-Cavilla @ 2007-09-25 20:25 UTC (permalink / raw)
To: xen-devel
Hi,
I was wondering, perhaps in my ignorance, what prevents an
auto-translated-physmap linux guest from being suspended/resumed.
As far as I understand, there would be no need for pagetable
canonicalization code in xc_linux_save, as well as no need for those
mfn_to_pfn translations in pre_suspend (and viceversa in post_suspend)
Anything I am missing?
Thanks!
Andres
^ permalink raw reply [flat|nested] 4+ messages in thread* RE: auto-translated-physmap resume
2007-09-25 20:25 ` auto-translated-physmap resume Andres Lagar-Cavilla
@ 2007-09-25 21:14 ` Ian Pratt
2007-09-25 21:56 ` Goswin von Brederlow
0 siblings, 1 reply; 4+ messages in thread
From: Ian Pratt @ 2007-09-25 21:14 UTC (permalink / raw)
To: Andres Lagar-Cavilla, xen-devel
> I was wondering, perhaps in my ignorance, what prevents an
> auto-translated-physmap linux guest from being suspended/resumed.
> As far as I understand, there would be no need for pagetable
> canonicalization code in xc_linux_save, as well as no need for those
> mfn_to_pfn translations in pre_suspend (and viceversa in post_suspend)
> Anything I am missing?
That's about it -- there's less to do if you're using shadow pagetables.
Since auto-translated-physmap is typically only used by various research
projects its not particularly well maintained, but its usually easy to
fix up.
Ian
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: auto-translated-physmap resume
2007-09-25 21:14 ` Ian Pratt
@ 2007-09-25 21:56 ` Goswin von Brederlow
2007-09-25 22:24 ` Daniel Stodden
0 siblings, 1 reply; 4+ messages in thread
From: Goswin von Brederlow @ 2007-09-25 21:56 UTC (permalink / raw)
To: Ian Pratt; +Cc: Andres Lagar-Cavilla, xen-devel
"Ian Pratt" <Ian.Pratt@cl.cam.ac.uk> writes:
>> I was wondering, perhaps in my ignorance, what prevents an
>> auto-translated-physmap linux guest from being suspended/resumed.
>> As far as I understand, there would be no need for pagetable
>> canonicalization code in xc_linux_save, as well as no need for those
>> mfn_to_pfn translations in pre_suspend (and viceversa in post_suspend)
>> Anything I am missing?
>
> That's about it -- there's less to do if you're using shadow pagetables.
> Since auto-translated-physmap is typically only used by various research
> projects its not particularly well maintained, but its usually easy to
> fix up.
>
> Ian
Where can I find docs on auto-translated-physmap? Is there some
overview what it means somewhere?
MfG
Goswin
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: auto-translated-physmap resume
2007-09-25 21:56 ` Goswin von Brederlow
@ 2007-09-25 22:24 ` Daniel Stodden
0 siblings, 0 replies; 4+ messages in thread
From: Daniel Stodden @ 2007-09-25 22:24 UTC (permalink / raw)
To: Goswin von Brederlow; +Cc: xen-devel
On Tue, 2007-09-25 at 23:56 +0200, Goswin von Brederlow wrote:
> "Ian Pratt" <Ian.Pratt@cl.cam.ac.uk> writes:
>
> >> I was wondering, perhaps in my ignorance, what prevents an
> >> auto-translated-physmap linux guest from being suspended/resumed.
> >> As far as I understand, there would be no need for pagetable
> >> canonicalization code in xc_linux_save, as well as no need for those
> >> mfn_to_pfn translations in pre_suspend (and viceversa in post_suspend)
> >> Anything I am missing?
> >
> > That's about it -- there's less to do if you're using shadow pagetables.
> > Since auto-translated-physmap is typically only used by various research
> > projects its not particularly well maintained, but its usually easy to
> > fix up.
> >
> > Ian
>
> Where can I find docs on auto-translated-physmap? Is there some
> overview what it means somewhere?
comment in
http://xenbits.xensource.com/xen-3.0.4-testing.hg?file/tip/xen/include/public/features.h
might help.
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@cs.tum.edu
PGP Fingerprint: F5A4 1575 4C56 E26A 0B33 3D80 457E 82AE B0D8 735B
^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <E1ITcVL-000214-Ec@host-192-168-0-1-bcn-london>
2007-09-25 20:25 ` auto-translated-physmap resume Andres Lagar-Cavilla
2007-09-25 21:14 ` Ian Pratt
2007-09-25 21:56 ` Goswin von Brederlow
2007-09-25 22:24 ` Daniel Stodden
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