Re: RFC: 2.4.26 p4-smp
On Thu, Aug 19, 2004 at 10:16:31AM -0400, Andres Salomon wrote:
> On Thu, 19 Aug 2004 12:56:08 +0900, Horms wrote:
>
> > Hi,
> >
> > I am wondering what the reaction to uploading a p4-smp kernel
> > for kernel-image-2.4.26-i386 would be. This would allow hyperthreading
> > to be enabled on p4 processors that support it. I can also supply
> > a suitable patch to debian-installer if there is interest, though that
> > is a) probably too late and b) orthogonal.
> >
> > The only change to 686-smp that I enviage would be to change
> > the Processor Family to p4. I would probably provide an p4 (non-smp)
> > image as well for completeness.
> >
> > This could all be done for 2.4.26-6.
> >
> > Objections?
>
> Hm, I had been under the impression that 686-smp already enabled
> hyperthreading. Looking at the difference between 2.4 and 2.6, though, it
> would appear that CONFIG_X86_HT isn't set. Is there a way to set this for
> 686-smp, or is 2.4 support for that not there yet?
My understanding is that you need P4+SMP for hyperthreading to work.
Certainly the 686-smp kernel does not enable hyperthreading, that
was the first thing I tested.
--
Horms
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