Messages in this thread |  | | Date | Thu, 03 May 2001 14:22:03 -0400 | From | Jeff Garzik <> | Subject | Re: Possible PCI subsystem bug in 2.4 |
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Linus Torvalds wrote: > The question is mainly _which_ power of two. > > I don't think we can round up infinitely, as that might just end up > causing us to not have any PCI space at all. Or we could end up deciding > that real PCI space is memory, and then getting a clash when a real device > tries to register its bios-allocated area that clashes with our extreme > rounding. > > I suspect it would be safe to round up to the next megabyte, possibly up > to 64MB or so. But much more would make me nervous. > > Any suggestions?
Is there any chance you could simply test the bottom of PCI address space? If you could set up the x86 to trap non-DRAM read/writes temporarily, you could tell where useable DRAM area stops.
-- Jeff Garzik | Game called on account of naked chick Building 1024 | MandrakeSoft | - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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