Re: [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue

Martin Mares
2007-12-23T10:18:18Z

Hi!

> The fact is, 99% of the hardware you buy *today* has absolutely zero need
> for extended PCI config access. In fact, I would not be surprised at all
> if most hardware sold today generally doesn't have *any* devices that even
> have config registers in the 0x100+ range.

Most PCI Express bridges have root complex control block capabilities
which have to reside in the extended range.

However I agree that hardware _requiring_ extended config register access
is rare.

Have a nice fortnight
--
Martin `MJ' Mares <mj@ucw.cz> http://mj.ucw.cz/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth
"Dijkstra probably hates me." -- /usr/src/linux/kernel/sched.c