lkml.org 
[lkml]   [2007]   [Dec]   [23]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateSun, 23 Dec 2007 11:18:02 +0100
FromMartin Mares <>
SubjectRe: [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue
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


\
 
 \ /
  Last update: 2007-12-23 10:21    [from the cache]
©2003-2008