* Local APIC(?)+PIII mobile
@ 2002-12-13 11:56 João Seabra
2002-12-13 13:45 ` Joel Jaeggli
2002-12-13 14:15 ` Alan Cox
0 siblings, 2 replies; 3+ messages in thread
From: João Seabra @ 2002-12-13 11:56 UTC (permalink / raw)
To: linux-kernel
Hi all
I have an Asus S8600.
Mobile PIII 800Mhz + 192M RAM.
If i select "Local APIC support on uniprocessors" the kernel while booting
says there's no APIC present.Why?
I know the same problem with some other laptops.
Others detect it.
At home my Athlon Tunderbird + Asus A7V133-C with local APIC enabled detects
it but doesn seem to use it ...
cat /proc/interrupts
CPU0
0: 375529 XT-PIC timer
1: 7452 XT-PIC keyboard
2: 0 XT-PIC cascade
5: 113246 XT-PIC bttv, eth0
8: 2 XT-PIC rtc
10: 144373 XT-PIC EMU10K1
11: 382444 XT-PIC nvidia
12: 153864 XT-PIC PS/2 Mouse
14: 12346 XT-PIC ide0
15: 12 XT-PIC ide1
NMI: 0
ERR: 0
Anyway why do I need local APIC :) ?What are the advantages?Links?
Thank you very much for your kindness
Best Regards,
João Seabra
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Local APIC(?)+PIII mobile
2002-12-13 11:56 Local APIC(?)+PIII mobile João Seabra
@ 2002-12-13 13:45 ` Joel Jaeggli
2002-12-13 14:15 ` Alan Cox
1 sibling, 0 replies; 3+ messages in thread
From: Joel Jaeggli @ 2002-12-13 13:45 UTC (permalink / raw)
To: João Seabra; +Cc: linux-kernel
the intel 440mx chipset that the asus is based on doesn't include an apic.
an apic is for doing multiprocessor interupt managemnet. across multiple
I/O subsystem each can have it own set of interupts...
On Fri, 13 Dec 2002, João Seabra wrote:
> Hi all
>
> I have an Asus S8600.
> Mobile PIII 800Mhz + 192M RAM.
> If i select "Local APIC support on uniprocessors" the kernel while booting
> says there's no APIC present.Why?
> I know the same problem with some other laptops.
> Others detect it.
>
>
> At home my Athlon Tunderbird + Asus A7V133-C with local APIC enabled detects
> it but doesn seem to use it ...
>
> cat /proc/interrupts
> CPU0
> 0: 375529 XT-PIC timer
> 1: 7452 XT-PIC keyboard
> 2: 0 XT-PIC cascade
> 5: 113246 XT-PIC bttv, eth0
> 8: 2 XT-PIC rtc
> 10: 144373 XT-PIC EMU10K1
> 11: 382444 XT-PIC nvidia
> 12: 153864 XT-PIC PS/2 Mouse
> 14: 12346 XT-PIC ide0
> 15: 12 XT-PIC ide1
> NMI: 0
> ERR: 0
>
> Anyway why do I need local APIC :) ?What are the advantages?Links?
>
> Thank you very much for your kindness
>
> Best Regards,
>
> João Seabra
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
--
--------------------------------------------------------------------------
Joel Jaeggli Academic User Services joelja@darkwing.uoregon.edu
-- PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E --
In Dr. Johnson's famous dictionary patriotism is defined as the last
resort of the scoundrel. With all due respect to an enlightened but
inferior lexicographer I beg to submit that it is the first.
-- Ambrose Bierce, "The Devil's Dictionary"
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Local APIC(?)+PIII mobile
2002-12-13 11:56 Local APIC(?)+PIII mobile João Seabra
2002-12-13 13:45 ` Joel Jaeggli
@ 2002-12-13 14:15 ` Alan Cox
1 sibling, 0 replies; 3+ messages in thread
From: Alan Cox @ 2002-12-13 14:15 UTC (permalink / raw)
To: João Seabra; +Cc: Linux Kernel Mailing List
On Fri, 2002-12-13 at 11:56, João Seabra wrote:
> I have an Asus S8600.
> Mobile PIII 800Mhz + 192M RAM.
> If i select "Local APIC support on uniprocessors" the kernel while booting
> says there's no APIC present.Why?
> I know the same problem with some other laptops.
> Others detect it.
Because there isn't one present 8)
The APIC although on processor isnt present in all processors - at least
not all older ones. Its not a required CPU feature so not every
processor vendor includes it on all their processors.
Alan
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2002-12-13 13:37 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2002-12-13 11:56 Local APIC(?)+PIII mobile João Seabra
2002-12-13 13:45 ` Joel Jaeggli
2002-12-13 14:15 ` Alan Cox
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.