Re: [ACPI] Re: [BKPATCH] LAPIC fix for 2.6

[Linus Torvalds]

On Mon, 11 Oct 2004, Maciej W. Rozycki wrote:
> 
>  How about only disabling the APIC if power-management is in use?

No. You cannot test for SMM. Full stop. That's the whole _point_ of SMM. 
It's hidden away.

Why do you care? If you have a machine with this problem, just use the
"lapic" command line. We do NOT default to unsafe values.

>  I don't like the idea of "punishing" good hardware, because something 
> behaves ill out there.

We don't punish good hardware.

We punish _bad_ hardware. The kind of hardware that has a BIOS that has 
disabled the local APIC. 

Try to get your BIOS updated if you want to consider your hardware "good". 
And if the hw vendor doesn't have a fixed BIOS, then don't call it good, 
and use "lapic".

		Linus
-
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/