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    powerpc/pseries: Update LMB associativity index during DLPAR add/remove · bdf5fc63
    Nathan Fontenot 提交于
    The associativity array index specified for a LMB in the device tree,
    /ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory, needs to be updated
    prior to DLPAR adding a LMB and after DLPAR removing a LMB.
    
    Without doing this step in the DLPAR add process a LMB could be configured
    with the incorrect affinity. For a LMB that was not present at boot the
    affinity index is set to 0xffffffff, which defaults to adding the LMB to
    the first online node since the index is not a valid value. Or, the
    affinity index could contain a stale value if the LMB was present at boot
    but later DLPAR removed and is being DLPAR added back to the system.
    
    This patch adds a step in the DLPAR add flow to look up the associativity
    index for a LMB prior to adding a LMB and setting the associativity to
    0xffffffff when a LMB is removed.
    
    This patch also modifies the DLPAR add/remove flow to no longer do a single
    update of the device tree property after all of the requested DLPAR
    operations are complete and now does a property update during the add
    or remove of each LMB.
    Signed-off-by: NNathan Fontenot <nfont@linux.vnet.ibm.com>
    Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
    bdf5fc63
hotplug-memory.c 19.1 KB