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/
This archive was generated by hypermail 2b29 : Mon May 07 2001 - 21:00:17 EST