Messages in this thread |  | | Subject | RE: Hyperthreading | Date | Thu, 22 Aug 2002 14:58:33 +0200 | From | "Nir Soffer" <> |
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> On Wed, 21 Aug 2002, James Bourne wrote: > > On Wed, 21 Aug 2002, Reed, Timothy A wrote: > > > > > > Can anyone lead me to a good source of information on > what options should be > > > in the kernel for hyperthreading?? I am still fighting with a > > > sub-contractor over kernel options. > > > > As long as you have a P4 and use the P4 support you will get > > hyperthreading with 2.4.19 (CONFIG_MPENTIUM4=y). 2.4.18 > you have to also > > turn it on with a lilo option of acpismp=force on the > kernel command line. > > You do need CONFIG_SMP and a processor capable of HyperThreading, > i.e. Pentium 4 XEON; but CONFIG_MPENTIUM4 is not necessary for HT, > just appropriate to that processor in other ways. > > Hugh
Grepping for MPENTIUM4 in the tree only shows up that it causes the kernel to be compiled with -march=i686, much like M686 and MPENTIUMIII. Are there more subtle ways it affects the kernel that I missed? (in the 2.4.x tree)
Thanks, Nir.
-- Nir Soffer -=- Software Engineer, Exanet Inc. -=- "Father, why are all the children weeping? / They are merely crying son O, are they merely crying, father? / Yes, true weeping is yet to come" -- Nick Cave and the Bad Seeds, The Weeping Song - 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/
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