On Fri, Jan 21, 2011 at 11:19:44AM +0000, Daniel P. Berrange wrote:
> On Fri, Jan 21, 2011 at 08:39:46AM +0000, M A Young wrote:
> > On Thu, 20 Jan 2011, Bill McGonigle wrote:
> > 
> > > On 11/07/2010 03:55 PM, M A Young wrote:
> > >> If the plan to get key
> > >> xen drivers into 2.6.38 succeeds
> > >
> > > With the caveat that I don't really know what I'm looking for, I didn't 
> > > see 
> > > these make 2.6.38-rc1 (plenty of other Xen work, though).  I saw a 
> > > proposed 
> > > patch for netback hit xen-devel yesterday.
> > 
> > There was talk of userland netback and blkback in xen 4.1 which use the 
> > gntdev interface which did make it into 2.6.38 (userland blkback 
> > apparently gives the similar performance as the kernel one, netback is 
> > not as good). I am not sure of the details though, nor how you might use 
> > them if they are available.
> 
> Xen folks worked to give QEMU a userland netback/blkback implementation,
> but I don't believe this functionality is integrated into the mgmt stack
> at this time, so likely not much use yet.
> 

userspace blkback is included in xen-unstable (4.1) !

Afaik xen-unstable automatically 'falls back' to userspace blkback
if kernel blkback is not available.

I'm not sure if xen-unstable also has userspace netback..

-- Pasi

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