[SeaBIOS] [PATCH v2] optionrom: disallow int19 redirect for pnp roms.

[Gerd Hoffmann]

On Mon, Dec 10, 2018 at 09:53:01PM -0500, Kevin O'Connor wrote:
> On Thu, Dec 06, 2018 at 04:07:40PM +0100, Gerd Hoffmann wrote:
> > Check whenever pnp roms attempt to redirect int19, and in case it does
> > log a message and undo the redirect.
> > 
> > A pnp rom should not need this, we have BEVs and BCVs for that.
> > Nevertheless there are roms in the wild which are redirecting int19.
> > At least some BIOS implementations for physical hardware have a config
> > option in the setup to allow/disallow int19 redirections, so just not
> > allowing this seems to be the way to deal with this situation.
> 
> Thanks.  As discussed, I'm okay with this change.

ok.  I'll wait for test results before committing.

cheers,
  Gerd