Messages in this thread | | | Date | Mon, 14 Aug 2006 13:46:14 +0200 | From | "Michal Piotrowski" <> | Subject | Re: HT not active |
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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/
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