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    SubjectRe: invalid SMP mptable on Toshiba Satellite 2430-301
    Hello,

    On Thu, Nov 13, 2003 at 10:13:08AM -0800, Linus Torvalds wrote:
    > Hmm.. Do you have ACPI enabled? We really shouldn't need the MP table if
    > the information is elsewhere, but the mptable assumptions might be a bit
    > entrenched.

    With SMP and ACPI enabled I get the following kernel
    boot messages

    Intel MultiProcessor Specification v1.4
    Virtual Wire compatibility mode.
    SMP mptable: bad signature [0x0]!
    BIOS bug, MP table errors detected!...
    ... disabling SMP support. (tell your hw vendor)

    The last message is generated by the following code
    in arch/i386/kernel/mpparse.c:

    if (!smp_read_mpc((void *)mpf->mpf_physptr)) {
    smp_found_config = 0;
    printk(KERN_ERR "BIOS bug, MP table errors detected!...\n");
    printk(KERN_ERR "... disabling SMP support. (tell your hw vendor)\n");
    return;
    }

    I don't know what effects are caused by the 'smp_found_config = 0',
    but later-on the following messages appear:

    No local APIC present or hardware disabled
    ...
    CPU: After generic identify, caps: bfebf9ff 00000000 00000000 00000000
    CPU: After vendor identify, caps: bfebf9ff 00000000 00000000 00000000
    CPU: Trace cache: 12K uops, L1 D cache: 8K
    CPU: L2 cache: 512K
    CPU: Hyper-Threading is disabled
    CPU: After all inits, caps: bfebf9ff 00000000 00000000 00000080
    ...
    SMP motherboard not detected.
    Local APIC not detected. Using dummy APIC emulation.
    Starting migration thread for cpu 0
    CPUS done 4

    I hope this helps,
    Jochen
    --
    http://seehuhn.de/
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