Messages in this thread | | | From | (Eric W. Biederman) | Subject | Re: IO-APIC + timer doesn't work (was: Linux 2.6.20-rc1) | Date | Mon, 18 Dec 2006 06:14:28 -0700 |
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Tobias Diedrich <ranma@tdiedrich.de> writes:
> Linus Torvalds wrote: > >> Your dmesg is kind of interesting: >> >> ..TIMER: trying IO-APIC=0 PIN=0 with 8259 IRQ0 enabled(7)APIC error on CPU0: > 04(40) >> .. failed >> >> where that APIC error on CPU0 seems to be a "Send accept error" and "Send >> illegal vector" thing. I think we actually got the interrupt there, but >> because we had some APIC setup bug, we didn't accept it properly, and it >> resulted in that "APIC error" thing. Maybe. > > I just tried changing the code so the "8259 IRQ0 enabled" case is > tested first and with that it boots fine.
Could you try removing the clear_IO_APIC_pin from try_io_apic_pin.
This isn't a complete fix but I believe for your hardware it will fix the problem and it points at what the real fix is.
Not properly programming the io_apic for the case we want to test.
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