s390/mm: speedup storage key initialization

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Use sske with multiple block control to initialize storage keys within
a 1 MB frame at once.
It turned out that the sske with mb=1 is an order of magnitude faster
than pfmf. This is only an issue for very large systems (several 100GB)
where storage key initialization could last more than a minute.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Heiko Carstens 2013-03-14 16:46:05 +01:00 • committed by Martin Schwidefsky

parent 1bca09f714

commit f7f8d7e51d

1 changed files with 9 additions and 15 deletions

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arch/s390/mm/pageattr.c

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