On Sat, 22 Dec 2007, Jeff Garzik wrote: > > It should be self-evident that mmconfig doesn't work on old hardware, is not > needed on old hardware, should not be turned on for old hardware, and in > general should never disturb old hardware.
.. but it does. How do you figure out when to turn it off? By "old hardware" I don't mean stuff from the last century, that generally doesn't even *have* MMCONFIG. I mean the stuff you can buy *today*, which will be old by the time people really start _needing_ MMCONFIG. 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. So those are the kinds of machines we want to protect from blowing up. Stuff that isn't sold with Vista, and has never been tested (or where vista does some work-arounds we don't even know about - somebody was mentioning things like looking at the BIOS date etc). Linus -- 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/