lkml.org 
[lkml]   [2006]   [Aug]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: HT not active
Hi Jan,

On 14/08/06, Jan Engelhardt <jengelh@linux01.gwdg.de> wrote:
> Hello list,
>
>
>
> I cannot get HT to be used on some machine:
>
> w04a# cat /proc/cpuinfo
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 15
> model : 0
> model name : Intel(R) Pentium(R) 4 CPU 1700MHz
> stepping : 10
> cpu MHz : 1694.890
> cache size : 256 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 2
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm up
> bogomips : 3393.46
>
> 'ht' indicates:
> #define X86_FEATURE_HT (0*32+28) /* Hyper-Threading */
>
> so I installed an SMP kernel, which has
> CONFIG_SMP=y
> CONFIG_SUSPEND_SMP=y
> CONFIG_X86_FIND_SMP_CONFIG=y
> CONFIG_SCHED_SMT=y
> CONFIG_X86_HT=y
>
> yet it shows the 'up' flag in cpuinfo
> #define X86_FEATURE_UP (3*32+ 9) /* smp kernel running on up */
>
> What could be missing? Some BIOS option perhaps?
> Thanks for any hints.

Do you have CONFIG_NR_CPUS=2 in kernel config?

>
>
> Jan Engelhardt
> --

Regards,
Michal

--
Michal K. K. Piotrowski
LTG - Linux Testers Group
(http://www.stardust.webpages.pl/ltg/wiki/)
-
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: 2006-08-14 13:49    [W:0.059 / U:0.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site