[cgl_discussion] CONFIG_HYPERTHREADING ??

Randy.Dunlap rddunlap at osdl.org
Tue Oct 8 10:17:26 PDT 2002

On Tue, 8 Oct 2002, Patrick Mochel wrote:

| On Tue, 8 Oct 2002, John Grana wrote:
| > Is Hyperthreading something that only applies to x86 architecture?
| > If not, then having the ability to disable via BIOS is ok, but other
| > processor architectures such as Sparc (with OpenBoot), MIPS, PowerPC etc.
| > have different ideas of BIOS (like boot proms, monitors, etc.). So, the way
| > it was descibed below:
| >
| > "We did not make a statement specific to HOW to make this (or in general all
| > of the)requirement(s) actually configurable"
| It's specific to not only x86, but to Pentium 4 processors. That should
| also mean, though, that hyperthreading won't be enabled unless CONFIG_X86
| and CONFIG_PENTIUM4 are enabled.

I've heard some discussion of hyperthreading for PPC systems (and
not actually released yet).  The concept isn't specific to x86.

  "In general, avoiding problems is better than solving them."
  -- from "#ifdef Considered Harmful", Spencer & Collyer, USENIX 1992.

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