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s390/alternative: use a copy of the facility bit mask

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[ Upstream commit cf14899846 ]

To be able to switch off specific CPU alternatives with kernel parameters
make a copy of the facility bit mask provided by STFLE and use the copy
for the decision to apply an alternative.

Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Martin Schwidefsky 2018-04-27 07:36:30 +02:00 • committed by Greg Kroah-Hartman
commit c257f81b6d
6 changed files with 31 additions and 4 deletions
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