On Sun, Dec 30, 2007 at 02:05:44PM +0100, Ingo Molnar wrote: > > * Andi Kleen <[EMAIL PROTECTED]> wrote: > > > > drivers that then are shown to really need it could use their *own* > > > ports. > > > > The i8259 driver uses it and it is known to be needed on some old > > chipsets. But it doesn't really have any "own" ports to use afaik. > > we'll solve that via an i8259-specific quirk. That is a lot cleaner and > maintainable than the current generic, always-enabled "opt out" > port-0x80 quirk.
You mean using pci quirks + udelay? Will be probably challenging to collect PCI-IDs for that. And there might be old systems needing it without PCI. They likely won't have DMI either. In theory you could make it a DMI year cut off of course (and assume old if no DMI, although that happens occasionally with new systems too); but that is generally considered ugly. I don't think it's a big problem to keep delays of some form by default in 8259 -- people who care about performance should be definitely using APIC mode instead. -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/
