Hyperthreading in non-SMP systems

Dag-Erling Smorgrav des at ofug.org
Sat May 3 08:18:49 PDT 2003


Steve Joynt <joynt at bigpond.net.au> writes:
> Is it possible to have Hyperthreading enabled in non-SMP systems?

If you mean "non-SMP kernel", what good would it do?

>                                                                   According
> to LINT the HTT option requires SMP and APIC_IO, but when I include both of
> those in my P4 3.06GHz system it panics on startup with:
>
> panic: pmap_bootstrap: no local apic!
> mp_lock = 0000000c; cpuid = 0; lapic.id = 00000000

Try removing APIC_IO.

DES
-- 
Dag-Erling Smorgrav - des at ofug.org


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