• Nathan Fontenot's avatar
    powerpc/pseries: Update memory hotplug code to use drmem LMB array · 6195a500
    Nathan Fontenot authored
    Update the pseries memory hotplug code to use the newly added
    dynamic reconfiguration LMB array. Doing this is required for the
    upcoming support of version 2 of the dynamic reconfiguration
    device tree property.
    
    In addition, making this change cleans up the code that parses the
    LMB information as we no longer need to worry about device tree
    format. This allows us to discard one of the first steps on memory
    hotplug where we make a working copy of the device tree property and
    convert the entire property to cpu format. Instead we just use the
    LMB array directly while holding the memory hotplug lock.
    
    This patch also moves the updating of the device tree property to
    powerpc/mm/drmem.c. This allows to the hotplug code to work without
    needing to know the device tree format and provides a single
    routine for updating the device tree property. This new routine
    will handle determination of the proper device tree format and
    generate a properly formatted device tree property.
    Signed-off-by: default avatarNathan Fontenot <nfont@linux.vnet.ibm.com>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    6195a500
drmem.h 1.68 KB