On Sat, Jul 24, 2010 at 11:45:22AM -0400, Kevin
On Mon, Jul 12, 2010 at 04:13:06PM +0300, Avi
Does SeaBIOS use big real mode now?
calls option roms in big real mode. This is required by the
See the transition16big function in src/romlayout.S. It briefly jumps
to an address at 0xffxxx during the transition to real-mode. At a
quick glance, it looks like it could probably be changed to not use a
I put together a SeaBIOS patch so it does not use code
in big real mode - in case anyone wants to test it. Note, this only
reduces the use of code addresses>64K - SeaBIOS will still try to use
data addresses>64K (eg, in option rom PMM code).
What conditions are needed to trigger this path? This can't occur
under normal operation, since it will fail badly with kvm on Intel.