Messages in this thread | | | Date | Sun, 15 Dec 2002 13:44:08 +0000 | From | Dave Jones <> | Subject | Re: Kernel for Pentium 4 hyperthreading? |
| |
On Sat, Dec 14, 2002 at 08:11:45PM -0500, Scott Robert Ladd wrote:
> I've just received a new computer based on a 2.8 GHz Pentium 4 with > hyper-threading enabled. Yes, HT is enabled in the BIOS; yes, /proc/cpuinfo > shows the 'ht' flag; yes, I've compiled 2.4.20 (stock) with SMP and ACPI > enabled. > No, it doesn't work. cat /proc/cpuinfo reports a single CPU.
Note that just because /proc/cpuinfo shows 'ht' does not mean you can use it in hyperthreaded mode. To do that, you also have to have >1 sibling in the physical package. Non-Xeon type P4's don't have the extra sibling, so don't function as a hyperthreaded CPU.
> Can 2.4.20 handle a Pentium 4 (not Xeon, mind you) with HT? What could I be > missing in my kernel build?
It's more a case of whats missing in your CPU package 8-)
Dave
-- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs - 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/
| |