s390/mm: implement soft-dirty bits for user memory change tracking
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 22 Apr 2015 12:47:42 +0000 (14:47 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 14 Oct 2015 12:32:05 +0000 (14:32 +0200)
commit5614dd920a02a524c9abc9573374d81f0535f18a
tree2386960d616f9479556b9e94d51dc5561f42598c
parenta7b7617493179a0ff76cbc0cc2eb45ad07074765
s390/mm: implement soft-dirty bits for user memory change tracking

Use bit 2**1 of the pte and bit 2**14 of the pmd for the soft dirty
bit. The fault mechanism to do dirty tracking is already in place.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/Kconfig
arch/s390/include/asm/pgtable.h
arch/s390/mm/hugetlbpage.c