s390/kvm: support collaborative memory management

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This patch enables Collaborative Memory Management (CMM) for kvm
on s390. CMM allows the guest to inform the host about page usage
(see arch/s390/mm/cmm.c). The host uses this information to avoid
swapping in unused pages in the page fault handler. Further, a CPU
provided list of unused invalid pages is processed to reclaim swap
space of not yet accessed unused pages.

[ Martin Schwidefsky: patch reordering and cleanup ]

Signed-off-by: Konstantin Weitz <konstantin.weitz@gmail.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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This commit is contained in:

Konstantin Weitz 2013-04-17 17:36:29 +02:00 • committed by Martin Schwidefsky

parent 45961722f8

commit b31288fa83

6 changed files with 175 additions and 1 deletions

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5

arch/s390/include/asm/kvm_host.h

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26

arch/s390/include/asm/pgtable.h

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25

arch/s390/kvm/kvm-s390.c

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2

arch/s390/kvm/kvm-s390.h

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41

arch/s390/kvm/priv.c

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77

arch/s390/mm/pgtable.c

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