acpi=off switches off also HT support, maybe it is something SMPrelated?

From: wzabolot@xxxxxxxxxxxxxxxxxxxxxxx
Date: Sat Jun 04 2011 - 18:02:28 EST

W dniu 04.06.2011 23:41, wzabolot@xxxxxxxxxxxxxxxxxxxxxxx pisze:
The same machine boots and works correctly with when I add
"acpi=off" boot parameter. Is the problem located somewhere in the acpi
related code?

I've just stated, that acpi=off switches off also HT support.
However works correctly on my another dual-core machine.
May it be something, which fails on HT enabled CPU but works correctly
on SMP machine?
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