s390/cacheinfo: add missing facility check

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Git commit d97d929f06 ("s390: move cacheinfo sysfs to generic cacheinfo
infrastructure") removed the general-instructions-extension availability
check before the ecag instruction is executed.
Without this check this may lead to crashes on machines without this facility.
Therefore add the check again where needed.

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 2015-03-18 13:22:00 +01:00 • committed by Martin Schwidefsky

parent 1a327ffd3d

commit 77bb36e57b

1 changed files with 4 additions and 0 deletions

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arch/s390/kernel/cache.c

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