[SeaBIOS] [PATCH 1/3] vgahooks: Allow usage of VGA hooks in the Xen case

Kevin O'Connor kevin at koconnor.net
Wed Feb 1 05:04:47 CET 2012

On Mon, Jan 30, 2012 at 01:55:54PM +0000, julian.pidancet at gmail.com wrote:
> From: Julian Pidancet <julian.pidancet at citrix.com>
> This patch enables the VGAHOOKS config option if the BIOS is configured
> for Xen.
> In the Xen VGA passthrough case, the option ROM can be extracted from
> the physical device by hvmloader and pre-deployed for seabios. This
> patch also allows setting up VGA hooks in case the VGA option ROM is
> already deployed by hvmloader.

This seems a bit odd - if option roms are deployed, how can seabios
reliably find the vga device?  Wouldn't it be simpler to just use
seabios in non-optionrom-deployed mode?  (After all, wouldn't seabios
still be able to pull the roms even if hvmloader alread did?)


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