[SeaBIOS] [PATCH] Support more than one vga card
glommer at redhat.com
Wed May 4 18:22:03 CEST 2011
On Tue, 2011-05-03 at 20:51 -0400, Kevin O'Connor wrote:
> On Tue, May 03, 2011 at 09:41:48PM -0300, Glauber Costa wrote:
> > On Tue, 2011-05-03 at 19:58 -0400, Kevin O'Connor wrote:
> > > My understanding is that in a machine with multiple VGA devices only
> > > one vga device is setup to forward the legacy VGA IO ranges over PCI,
> > > and only that device should have its option ROM executed.
> > >
> > > My understanding is that running the vga option roms for all vga
> > > devices would be incorrect and could cause a real machine to not boot
> > > properly.
> > how's that different in pci vs vgaroms/ ?
> > "Could cause a real machine to not boot" is true regardless.
> I don't understand your question. For regular PCI devices every
> option rom should be run, regardles of how many devices are in the
> system. VGA option roms are special though - my understanding is
> exactly one VGA device should have its option rom executed.
let me rephrase then: what if you have n vga option roms under fw_cfg's
Would you execute only one of them?
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