s390/mm: hugetlb pages within a gmap can not be freed

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Guests backed by huge pages could theoretically free unused pages via
the diagnose 10 instruction. We currently don't allow that, so we
don't have to refault it once it's needed again.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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Dominik Dingel 2018-07-13 11:28:29 +01:00 • committed by Janosch Frank

parent bd096f6443

commit 7d735b9ae8

1 changed files with 6 additions and 0 deletions

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arch/s390/mm/gmap.c

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