Re: 2.6.4-mm2

From: Nick Piggin
Date: Sat Mar 20 2004 - 04:03:09 EST

Len Brown wrote:

On Fri, 2004-03-19 at 23:19, Brown, Len wrote:

CONFIG_X86_HT=y does not enable HT.
CONFIG_X86_HT=n does not disable HT.
It only controls if the cpu_sibling_map[] etc. are initialized.

acpi=off does not disable HT

oops, that line incorrect.
we fixed "acpi=off" to _really_ mean ACPI off -- table parsing
and all, so it does disable HT, along w/ all the other stuff
that depends on ACPI.

So how come oprofile seems to think there is a sibling?
Can you verify both cases use physical only CPUs?

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