[2/3] powerpc/pseries: Update LMB associativity index during DLPAR add/remove

[Michael Ellerman]

On Wed, 2016-10-02 at 17:12:13 UTC, Nathan Fontenot wrote:
> 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: Nathan Fontenot <nfont at linux.vnet.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/bdf5fc6338047cfeba98d2ab62

cheers