On Tue, Nov 27, 2018 at 01:10:38PM +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.
Buglink: https://bugzilla.redhat.com//show_bug.cgi?id=1642135
That is very odd. I'm pretty sure iPXE normally does register itself as a BEV - any idea why it's now hooking int19?
I'm leery of making a change like this, because there's a good chance it will break something in some other obscure software. I think fixing this in iPXE would be preferable if possible.
-Kevin