Messages in this thread | | | Date | Fri, 13 May 2005 13:18:40 -0700 | From | "Barry K. Nathan" <> | Subject | Re: Hyper-Threading Vulnerability |
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On Fri, May 13, 2005 at 03:14:43PM -0400, Jim Crilly wrote: > And what if you have more than one physical HT processor? AFAIK there's no > way to disable HT and still run SMP at the same time.
Actually, there is; read my post earlier in this thread: http://marc.theaimsgroup.com/?l=linux-kernel&m=111598859708620&w=2
To elaborate on the "check dmesg" part of that e-mail:
After you reboot with "maxcpus=2" (or however many physical CPU's you have), you need to make sure you have messages like this, which indicate that it really worked:
WARNING: No sibling found for CPU 0. WARNING: No sibling found for CPU 1.
(and so on, if you have more than 2 CPU's)
-Barry K. Nathan <barryn@pobox.com>
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