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    Date
    SubjectRe: State of the Linux PCI and PCI Hotplug Subsystems for 2.6.16-rc5
    From
    From: Lee Revell <rlrevell@joe-job.com>
    Date: Thu, 09 Mar 2006 15:52:35 -0500

    > Ubuntu doesn't provide a UP 686 kernel?
    >
    > Isn't there a performance hit running an SMP kernel on UP?

    There is some cost, but it is mitigated by a patch they include
    which nops out all the spinlocks when a UP system is detected.
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