Re: [Xen-devel] status of PV drivers in Xen 4.0

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Tue, 20 Apr 2010, Pasi Kärkkäinen wrote:
> On Tue, Apr 20, 2010 at 05:52:58PM +0100, Stefano Stabellini wrote:
> > On Tue, 20 Apr 2010, Pasi Kärkkäinen wrote:
> > > Getting pvops-based pv-on-hvm drivers to upstream Linux is the ultimate 
> > > goal of course :)
> > > 
> > 
> > I temporarily had to slow down my work on that because of other deadlines
> > I had in the last months, but soon I should be able to resume my work
> > full time.
> > I am currently trying to fix a save\restore bug that prevents pv
> > drivers or the domain from resuming correctly after a save\restore or a
> > migration.
> > In particular the call to dpm_suspend_start doesn't leave the kernel in
> > a good state in the PV on HVM case and I am not sure why: it seems to hang
> > half way through.
> > I need to call dpm_suspend_start because xenbus_dev_suspend has to be
> > called otherwise the pv drivers don't resume correctly.
> >
> 
> Thanks for the update!
> 
> Hmm.. I guess the code in the old xenlinux based pv-on-hvm drivers is 
> different enough
> so that it cannot be compared? 
> 
 

I am using the code under unmodified_drivers as a reference and that is
quite different.

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