Messages in this thread |  | | Date | Thu, 22 Nov 2001 14:21:15 -0800 (PST) | From | Linus Torvalds <> | Subject | RE: Linux-2.4.15-pre9 |
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On Thu, 22 Nov 2001, Leif Sawyer wrote: > > adding the 'pci=biosirq' to my kernel boot command line causes an oops:
Well, you seem to have a buggered BIOS - the oops is actually in the BIOS segment, and the BIOS appears to try to re-load the ES segment register with some strange non-existing segment.
Your BIOS PCI irq routing routines probably only work in real-mode or something like that.
This is the reason Linux avoids BIOS calls like the plague, and why you have to ask for them explicitly - the likelihood of any random BIOS being broken is actually rather high. That's probably because
- the BIOS is written mostly in assembly - the BIOS is tested exclusively with DOS and Windows - most BIOS writers appear to simply be incompetent, or just not care.
Not a good combination, in short.
I'd love to just remove the support for BIOS calls entirely, but for every ten broken machines there is one machine that actually works, so..
Linus
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