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Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with u
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS |
Date: |
Mon, 1 Jun 2015 14:27:15 +0200 |
On Mon, Jun 01, 2015 at 02:24:02PM +0200, Gerd Hoffmann wrote:
> On Mo, 2015-06-01 at 14:17 +0200, Michael S. Tsirkin wrote:
> > On Mon, Jun 01, 2015 at 01:40:19PM +0200, Gerd Hoffmann wrote:
> > > 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.
> >
> > ovmf is especially interesting. Marcel, did you look at what
> > happens with pxb and ovmf?
> >
> > > You might boot with old seabios for
> > > whatever reasons (say bisecting down something).
> >
> > But then you won't have pxb, will you?
>
> Devices behind pxb wouldn't be working because they didn't got resources
> assigned, yes.
I mean that there's no way to get old seabios+pxb when bisecting.
> But at least the resources for the primary root bus
> devices would not be screwed up like they are without this patch (IIRC).
>
> cheers,
> Gerd
>
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, (continued)
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Marcel Apfelbaum, 2015/06/01
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Michael S. Tsirkin, 2015/06/01
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Marcel Apfelbaum, 2015/06/01
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Laszlo Ersek, 2015/06/01
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Marcel Apfelbaum, 2015/06/01
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Laszlo Ersek, 2015/06/01
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Marcel Apfelbaum, 2015/06/02
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Laszlo Ersek, 2015/06/02
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Marcel Apfelbaum, 2015/06/02
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Gerd Hoffmann, 2015/06/01
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Gerd Hoffmann, 2015/06/01
- Re: [Qemu-devel] [PATCH V7 23/24] apci: fix PXB behaviour if used with unsupported BIOS, Michael S. Tsirkin, 2015/06/01