powerpc/pseries: Implement indexed-count hotplug memory add

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Indexed-count add for memory hotplug guarantees that a contiguous block
of <count> lmbs beginning at a specified <drc index> will be assigned,
any LMBs in this range that are not already assigned will be DLPAR added.
Because of Qemu's per-DIMM memory management, the addition of a contiguous
block of memory currently requires a series of individual calls to add
each LMB in the block. Indexed-count add reduces this series of calls to
a single call for the entire block.

Signed-off-by: Sahil Mehta <sahilmehta17@gmail.com>
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Sahil Mehta 2017-02-15 13:45:56 -05:00 • committed by Michael Ellerman

parent a90e883d8b

commit 333f7b7686

3 changed files with 147 additions and 12 deletions

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2

arch/powerpc/include/asm/rtas.h

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38

arch/powerpc/platforms/pseries/dlpar.c

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119

arch/powerpc/platforms/pseries/hotplug-memory.c

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