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    SubjectRe: About Celeron processor memory barrier problem
    On Thu, Dec 23, 1999 at 05:24:43PM +0800, michael chen wrote:
    > I found that when I compiled the 2.4 kernel with the option
    > of Pentium III or Pentium 4 on a Celeron's PC, it could cause the
    > system hang at very beginning boot stage, and I found the problem
    > is cause by the fact that Intel Celeron doesn't have a real memory
    > barrier,but when you choose the Pentium III option, the kernel
    > assume the processor has a real memory barrier.

    I think there is some confusion in the name "Celeron". AFAIK there are
    two kinds of Celerons: the original PII based Celeron, or the newer
    PIII based Celeron. My laptop has a PIII (Coppermine) based Celeron,
    and it boots perfectly well without your patch.

    If you are using a PII based Celeron, you should compile the kernel
    with support for the "Pentium-Pro/Celeron/Pentium-II". You certainly
    should not try to run a kernel with support for P4 on a "lower" CPU,
    read the documentation about CONFIG_M386 in Documentation/Configure.help
    for more information.


    Erik

    --
    J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
    of Electrical Engineering, Faculty of Information Technology and Systems,
    Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands
    Phone: +31-15-2783635 Fax: +31-15-2781843 Email: J.A.K.Mouw@its.tudelft.nl
    WWW: http://www-ict.its.tudelft.nl/~erik/
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