On Fri 2007-12-14 18:36:26, Alan Cox wrote: > > > i dont think this should matter: old systems that truly _need_ the ISA > > > delay will be slow enough to not trip up. (nor are they really affected > > > by these early delays - the delays were more for crappy ISA devices that > > > get initialized later down, when the delay loop is already calibrated) > > > > 8253 (DMAC) and 8254 (PIT) have been reported in earlier versions of the > > thread. By Alan, I believe. > > They've been seen to be problems up to PII era machines. I'm not aware of > any newer than that with this problem. We also don't need to touch the > DMAC that early anyway that I can see - just the PIT. > > In fact if we have a fast processor we have a TSC and APIC so we don't > need the PIT ?
It is still good to be able to disable APIC/TSC. Neither are particulary reliable time sources. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/
