* UP IO-APIC with ACPI table but no MP table?
@ 2002-04-02 11:42 Mikael Pettersson
2002-04-02 12:54 ` Arjan van de Ven
0 siblings, 1 reply; 3+ messages in thread
From: Mikael Pettersson @ 2002-04-02 11:42 UTC (permalink / raw)
To: linux-kernel
Is it possible to get the kernel to recognise and utilise the
chipset's IO-APIC if the BIOS has no MP table but does list the
IO-APIC in the ACPI table(s)?
If it's possible, is it also meaningful to do this on UP?
/Mikael
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: UP IO-APIC with ACPI table but no MP table?
[not found] <15529.39198.444056.901156@kim.it.uu.se.suse.lists.linux.kernel>
@ 2002-04-02 11:57 ` Andi Kleen
0 siblings, 0 replies; 3+ messages in thread
From: Andi Kleen @ 2002-04-02 11:57 UTC (permalink / raw)
To: Mikael Pettersson; +Cc: linux-kernel
Mikael Pettersson <mikpe@csd.uu.se> writes:
> Is it possible to get the kernel to recognise and utilise the
> chipset's IO-APIC if the BIOS has no MP table but does list the
> IO-APIC in the ACPI table(s)?
The new Intel ACPI implementation now merged into 2.5 should support
this. Of course it may still not work on your particular BIOS.
> If it's possible, is it also meaningful to do this on UP?
Using the IO-APIC makes a lot of sense, because it is a much more
efficient interface to the interrupt controller.
-Andi
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: UP IO-APIC with ACPI table but no MP table?
2002-04-02 11:42 UP IO-APIC with ACPI table but no MP table? Mikael Pettersson
@ 2002-04-02 12:54 ` Arjan van de Ven
0 siblings, 0 replies; 3+ messages in thread
From: Arjan van de Ven @ 2002-04-02 12:54 UTC (permalink / raw)
To: Mikael Pettersson; +Cc: linux-kernel
Mikael Pettersson wrote:
>
> Is it possible to get the kernel to recognise and utilise the
> chipset's IO-APIC if the BIOS has no MP table but does list the
> IO-APIC in the ACPI table(s)?
the mini acpi does this or at least can do it; right now it's not
compiled in for UP though
^ permalink raw reply [flat|nested] 3+ messages in thread
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2002-04-02 11:42 UP IO-APIC with ACPI table but no MP table? Mikael Pettersson
2002-04-02 12:54 ` Arjan van de Ven
[not found] <15529.39198.444056.901156@kim.it.uu.se.suse.lists.linux.kernel>
2002-04-02 11:57 ` Andi Kleen
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