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From: Gerd Hoffmann <kraxel@redhat.com>
Date: Mon, 01 Jun 2015 13:40:19 +0200
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Subject: Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used
 with unsupported BIOS
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To: Marcel Apfelbaum <marcel@redhat.com>
Cc: pbonzini@redhat.com, qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>

On Mo, 2015-06-01 at 12:44 +0300, Marcel Apfelbaum wrote:
> On 05/31/2015 09:12 PM, Michael S. Tsirkin wrote:
> > On Mon, May 25, 2015 at 06:34:01PM +0300, Marcel Apfelbaum wrote:
> >> PXB does not work with unsupported bioses, but should
> >> not interfere with normal OS operation.
> >> We don't ship them anymore, but it's reasonable
> >> to keep the work-around until we update the bios in qemu.
> >
> > We already did, did we not?
> Yes, we did, but Gerd preferred to keep this patch around.
> Adding him to thread.

seabios bundled with qemu isn't the only possible firmware.

We have ovmf, coreboot, qboot.  You might boot with old seabios for
whatever reasons (say bisecting down something).  IMO qemu should deal
with pxe not being initialized by the firmware in a sensible way, for
robustness reasons.

cheers,
  Gerd