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    SubjectRe: Hyper-Threading Vulnerability
    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:

    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 <>

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