Re: [Xen-devel] Re: Summary of Xen/pv_ops changes/additions in upcoming Linux 2.6.28?

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2008-11-26 at 13:51 +0100, Ferenc Wagner wrote:
> Pasi KÃrkkÃinen <pasik@xxxxxx> writes:
> 
> > On Wed, Nov 26, 2008 at 11:11:07AM +0100, Ferenc Wagner wrote:
> >> Pasi KÃrkkÃinen <pasik@xxxxxx> writes:
> >> 
> >>> http://wiki.xensource.com/xenwiki/XenParavirtOps
> >> 
> >> It says:
> >> 
> >> Xen/paravirt_ops has been in mainline Linux since 2.6.23, though it is
> >> probably first usable in 2.6.24. While I wouldn't put it in production
> >> just yet, for normal desktop/developer workloads it has proven to be
> >> pretty stable.
> >> 
> >> Is this statement still well founded?
> >
> > Yeah, I guess that should be modified.. suggestions? 
> >
> > pv_ops based domU kernels are shipping at least in Fedora 9 and Fedora 10.. 
> > how about other distributions? 
> 
> Debian Lenny will ship 2.6.26 kernel with save/restore/migration
> patches backported from 2.6.27.  That also works OK.  I use the
> 686-bigmem flavour only, but others successully run the 64 bit version
> AFAIK.

Unfortunately There's no 64 bit version of the domU pvops kernel in
Lenny. 64 bit domU first appeared in 2.6.27, I think, and the backport
was too involved for me to consider.

What Lenny will have is a kernel with the SUSE forward ported non-pvops
patch for 32+64 dom0 and 64 domU support (the -{686,amd64}-xen
packages), in addition to the -686-bigmem pvops kernel for 32 bit domU.

Ian.


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