Re: [patch] voluntary-preempt-2.6.8-rc2-L2 PS2 keyboard gone south

From: Ingo Molnar
Date: Sun Aug 01 2004 - 05:51:47 EST



On Sun, 1 Aug 2004, Felipe Alfaro Solana wrote:

> It turns out that my lock ups where related to APIC. Disabling APIC
> seems to get rid of those lock ups.

ah ... that makes sense. It is most likely level-triggered IO-APIC
interrupts that break. Could you try to turn off redirection for every
interrupt that says 'IO-APIC-level' in /proc/interrupts - does that
stabilize things? (besides the 'noapic' workaround you already
discovered.) How does your /proc/interrupts look like btw?

the 'XT-PIC' interrupt controller (i8259A) is fine for redirection. (and
that's what i used for testing almost exclusively.)

Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/