lkml.org 
[lkml]   [2003]   [Nov]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: not fixed in 2.4.23-rc3 (was: Re: 2.4.22 SMP kernel build for hyper threading P4)
On Sun, 2003-11-23 at 15:45, Eduard Bloch wrote:
>> #include <hallo.h>
>> * Brown, Len [Sun, Nov 23 2003, 03:16:11PM]:
>> > > weird 1+2xHT mode.

On Mon, Nov 24, 2003 at 01:19:07AM -0500, Len Brown wrote:
> Please try CONFIG_NR_CPUS=8, or apply the patch below to 2.4.23.
> smp_boot_cpus() incorrectly assumes that Local APIC ID's are handed out
> 0,1,2...
> But they're handed out 0,1,6,7 on your system. #6 happens to be your
> boot CPU, smp_boot_cpus() brings up #0 and #1, and never asks to boot #7
> -- thus 3 logical processors. If #0 happened to be your boot processor,
> you'd get only 2 logical processors.

A similar (but more elaborate) fix is in 2.6.


-- wli
-
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/

\
 
 \ /
  Last update: 2005-03-22 13:58    [W:0.042 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site