Date: Sun, 4 May 2003 11:53:05 +1000 From: Steve Joynt <joynt@bigpond.net.au> To: Dag-Erling Smorgrav <des@ofug.org> Cc: freebsd-stable@freebsd.org Subject: Re: Hyperthreading in non-SMP systems Message-ID: <200305041153.05258.joynt@bigpond.net.au> In-Reply-To: <xzp3cjwjbxm.fsf@flood.ping.uio.no> References: <20030503132725.D7983@mocha.cable.nu> <xzp3cjwjbxm.fsf@flood.ping.uio.no>
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> > Is it possible to have Hyperthreading enabled in non-SMP systems?
>
> If you mean "non-SMP kernel", what good would it do?
Sorry, what I meant was a machine that only supports a single physical
processor. I don't have any problems with a non-SMP kernel. I've tried adding
"options HTT" without SMP and APIC_IO, but (as I expected) it doesn't seem to
do anything.
> Try removing APIC_IO.
In file included from /usr/src/sys/sys/signalvar.h:42,
from /usr/src/sys/sys/user.h:59,
from /usr/src/sys/i386/i386/genassym.c:61:
machine/smp.h:19: #error APIC_IO required for SMP, add "options APIC_IO" to
your config file.
*** Error code 1
I have APIC enabled in the bios, so I assume the motherboard's interface is
somehow non-standard, or isn't supported yet. It's an ASUS P4PE board (Intel
845PE chipset).
- steve
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