• Kurt Garloff's avatar
    ACPI, ia64: Use SRAT table rev to use 8bit or 16/32bit PXM fields (ia64) · 9f10f6a5
    Kurt Garloff authored
    In SRAT v1, we had 8bit proximity domain (PXM) fields; SRAT v2 provides
    32bits for these. The new fields were reserved before.
    According to the ACPI spec, the OS must disregrard reserved fields.
    
    ia64 did handle the PXM fields almost consistently, but depending on
    sgi's sn2 platform. This patch leaves the sn2 logic in, but does also
    use 16/32 bits for PXM if the SRAT has rev 2 or higher.
    
    The patch also adds __init to the two pxm accessor functions, as they
    access __initdata now and are called from an __init function only anyway.
    
    Note that the code only uses 16 bits for the PXM field in the processor
    proximity field; the patch does not address this as 16 bits are more than
    enough.
    Signed-off-by: default avatarKurt Garloff <kurt@garloff.de>
    Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    9f10f6a5
acpi.c 25.7 KB