s390/mm: Add gmap pmd linking

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Let's allow pmds to be linked into gmap for the upcoming s390 KVM huge
page support.

Before this patch we copied the full userspace pmd entry. This is not
correct, as it contains SW defined bits that might be interpreted
differently in the GMAP context. Now we only copy over all hardware
relevant information leaving out the software bits.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>

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This commit is contained in:

Janosch Frank 2018-07-13 11:28:20 +01:00

parent 2c46e974dd

commit 58b7e200d2

2 changed files with 13 additions and 6 deletions

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6

arch/s390/include/asm/pgtable.h

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13

arch/s390/mm/gmap.c

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