On Wed, Dec 05, 2007 at 11:10:39AM +0000, Pavel Machek wrote: > On Fri 2007-12-07 09:50:26, David P. Reed wrote: > > My machine in question, for example, needs no waiting > > within CMOS_READs at all. And I doubt any other > > chip/device needs waiting that isn't already provided by > > the bus. the i/o to port 80 is very, very odd in this > > context. Actually, modern machines have potentially > > more serious problems with i/o ops to non-existent > > addresses, which may cause real bus wierdness. > > I dislike outb_p clobbering port 0x80, but you are wrong here. BIOSes > already do outs to port 0x80 for debugging reason, so these accesses > are unlikely to do something bad.
They only do that briefly during boot though. But Linux can do it much more often. If it's a race or similar it might just not trigger with the BIOS. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
