• Steffen Persvold's avatar
    x86/apic: Add separate apic_id_valid() functions for selected apic drivers · b7157acf
    Steffen Persvold authored
    As suggested by Suresh Siddha and Yinghai Lu:
    
    For x2apic pre-enabled systems, apic driver is set already early
    through early_acpi_boot_init()/early_acpi_process_madt()/
    acpi_parse_madt()/default_acpi_madt_oem_check() path so that
    apic_id_valid() checking will be sufficient during MADT and SRAT
    parsing.
    
    For non-x2apic pre-enabled systems, all apic ids should be less
    than 255.
    
    This allows us to substitute the checks in
    arch/x86/kernel/acpi/boot.c::acpi_parse_x2apic() and
    arch/x86/mm/srat.c::acpi_numa_x2apic_affinity_init() with
    apic->apic_id_valid().
    
    In addition we can avoid feigning the x2apic cpu feature in the
    NumaChip apic code.
    
    The following apic drivers have separate apic_id_valid()
    functions which will accept x2apic type IDs :
    
     x2apic_phys
     x2apic_cluster
     x2apic_uv_x
     apic_numachip
    Signed-off-by: default avatarSteffen Persvold <sp@numascale.com>
    Cc: Suresh Siddha <suresh.b.siddha@intel.com>
    Cc: Daniel J Blueman <daniel@numascale-asia.com>
    Cc: Yinghai Lu <yinghai@kernel.org>
    Cc: Jack Steiner <steiner@sgi.com>
    Link: http://lkml.kernel.org/r/1331925935-13372-1-git-send-email-sp@numascale.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
    b7157acf
boot.c 39.9 KB