s390/mm: set and get guest storage key mmap locking

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Move the mmap semaphore locking out of set_guest_storage_key
and get_guest_storage_key. This makes the two functions more
like the other ptep_xxx operations and allows to avoid repeated
semaphore operations if multiple keys are read or written.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

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Martin Schwidefsky 2016-03-08 11:53:35 +01:00 • committed by Christian Borntraeger

parent c427c42cd6

commit d3ed1ceeac

3 changed files with 24 additions and 24 deletions

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26

arch/s390/kvm/kvm-s390.c

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7

arch/s390/kvm/priv.c

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15

arch/s390/mm/pgtable.c

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