[SeaBIOS] [Qemu-devel] insmod virtio-blk is broken in qemu 1.0

[Richard W.M. Jones]

On Sat, Dec 17, 2011 at 11:49:56AM -0500, Kevin O'Connor wrote:
> On Sat, Dec 17, 2011 at 10:24:07AM -0600, Anthony Liguori wrote:
> > On 12/17/2011 09:25 AM, Richard W.M. Jones wrote:
> > >On Sat, Dec 17, 2011 at 09:22:45AM -0600, Anthony Liguori wrote:
> > >>I've even further narrowed it down to the presents or lack of '-vga
> > >>cirrus'.  If you add '-vga cirrus' to the above command line, the
> > >>guest will boot successfully.
> > >
> > >Confirmed: Adding -vga cirrus to the command line cures it too.
> > >
> > >That's a strange one :-)
> > 
> > vga sticks out a bit because it's one of the few places where we
> > treat device memory as ram as a performance optimization.
> > 
> > The only time vga has been touched in between v0.15 and v1.0 was
> > during the introduction of the memory API.
> > 
> > It's this commit:
> > 
> > commit d67c3f2cd92aed2247bfa8a9da61a902b7b2ff09
> > Author: Gerd Hoffmann <kraxel at redhat.com>
> > Date:   Wed Aug 10 17:34:13 2011 +0200
> > 
> >     seabios: update to master
> 
> This looks like the same issue reported at:
> 
> http://lists.nongnu.org/archive/html/qemu-devel/2011-10/msg00029.html
> 
> The SeaBIOS fix for this was in rel-1.6.3.1 - but that didn't make
> QEmu 1.0.  Does the problem go away if you upgrade to the newer
> SeaBIOS version?

Yes, SeaBIOS upstream + qemu 1.0 does fix the problem.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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