Re: Kernel for Pentium 4 hyperthreading?

[Dave Jones]

On Sun, Dec 15, 2002 at 12:40:59PM -0500, Scott Robert Ladd wrote:
 > Dave Jones wrote:
 > > Ah, apologies. Yes. In this case, you win. I bit the same problem you
 > > had btw with this box in 2.4. You need an updated BIOS. Contact Intel.
 > 
 > I'll ask Intel if there's a BIOS update. Computers are almost as bad as
 > games now; the first thing you need to do before using them is patch!
 > 
 > What evokes my curiosity is that the 2.5.51 kernel detects and correctly
 > uses the processor siblings, while 2.4.20 does not. Given that 2.5.51 is
 > running quite well, I think I'll just stay on the bleeding edge of Linux for
 > a while.

I think the problem was a missing MP table in the factory-shipped BIOS.
2.5 used ACPI to enumerate the siblings, whereas the 2.4 ACPI is a
little out of date in that department.
At least that was my random guess when I hit that problem.

		Dave

-- 
| Dave Jones.        http://www.codemonkey.org.uk