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Re: [Xen-devel] Error restoring DomU when using GPLPV



On Tue, Aug 04, 2009 at 02:12:48PM +0100, Keir Fraser wrote:
> On 04/08/2009 12:34, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote:
> 
> >> Like I said before -- unmapping the gnttab pages I think will not help
> > you
> >> for live migration, but I suppose it is a reasonable thing to do
> > anyway. For
> >> live migration I think xc_domain_save needs t get a bit smarter about
> >> Xenheap pages in HVM guests.
> > 
> > Understood. Do you have any idea about why it worked fine under 3.3.x
> > but not 3.4.x?
> 
> The bit of code in 3.3's xc_domain_save.c that is commented "Skip PFNs that
> aren't really there" is removed in 3.4. That will be the reason.
> 

James: Did you figure out how to fix this problem in gplpv drivers? Just
asking because it seems people hit this save/restore/migration problem pretty 
often..

-- Pasi

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