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    SubjectRe: [PATCH] Make Intel 8-way Xeons boot again
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    if the system can not use logical flat.

    should have some bit set in FADT...

    static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
    {
    #ifdef CONFIG_ACPI
    /*
    * Quirk: some x86_64 machines can only use physical APIC mode
    * regardless of how many processors are present (x86_64 ES7000
    * is an example).
    */
    if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
    (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) {
    printk(KERN_DEBUG "system APIC only can use physical flat");
    return 1;
    }
    #endif

    return 0;
    }


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