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    SubjectRe: APIC version and 8-bit APIC IDs
    Hi Maciej,

    > It actually depends on the APIC type, rather than the CPU. E.g. with
    > Pentium systems the width of the ID is either 4 bits or 8 bits,
    > depending on whether the integrated or an external 82489DX APIC is
    > used. This should be able to be determined by the APIC version; for
    > v <= 0xf the ID is 8-bit and for v >= 0x10 it used to be 4-bit. Now
    > you only need to determine what is the value of v above 0x10 that
    > makes the ID 8-bit again.

    That would be v>=0x14 for Intel. But that is wrong for AMD CPUs. The
    actual Dual-Core Athlon CPUs we have report an APIC version of 0x10.
    Please refer to the start of this thread.

    Anyway, I understand that you agree this does not belong into the
    subarch code?


    Martin Wilck Phone: +49 5251 8 15113
    Fujitsu Siemens Computers Fax: +49 5251 8 20409
    Heinz-Nixdorf-Ring 1
    D-33106 Paderborn
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