Messages in this thread |  | | | Date | Tue, 6 Jan 2004 22:45:38 -0800 (PST) | | From | Linus Torvalds <> | | Subject | Re: PCI memory allocation bug with CONFIG_HIGHMEM |
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On Wed, 7 Jan 2004, Dave Jones wrote: > > But PNPBIOS is an ISA relic isn't it ?
It still shows up. BIOSes use it exactly to tell the system about reserved magic IO regions (like the IO registers that are reserved for ACPI).
ISA may be gone, but the crap it left behind lingers on. The BIOS writers know that they can affect windows IO region allocation with it, so they still do - to make sure windows boots even when the hardware has some strange IO resource allocations.
And yes, that is likely to be an issue on x86-64 too.. As far as windows is concerned, it's just another 32-bit CPU.
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