powerpc/pseries: Automatically resize HPT for memory hot add/remove

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We've now implemented code in the pseries platform to use the new PAPR
interface to allow resizing the hash page table (HPT) at runtime.

This patch uses that interface to automatically attempt to resize the HPT
when memory is hot added or removed.  This tries to always keep the HPT at
a reasonable size for our current memory size.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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David Gibson 2016-12-09 11:07:38 +11:00 • committed by Michael Ellerman

parent 0de0fb09bb

commit 438cc81a41

3 changed files with 34 additions and 0 deletions

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1

arch/powerpc/include/asm/sparsemem.h

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29

arch/powerpc/mm/hash_utils_64.c

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4

arch/powerpc/mm/mem.c

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