s390/vmem: introduce and use SEGMENT_KERNEL and REGION3_KERNEL

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Instead of open-coded SEGMENT_KERNEL and REGION3_KERNEL assignments use
defines.  Also to make e.g. pmd_wrprotect() work on the kernel mapping
a couple more flags must be set. Therefore add the missing flags also.

In order to make everything symmetrical this patch also adds software
dirty, young, read and write bits for region 3 table entries.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Heiko Carstens 2016-05-11 10:52:07 +02:00 • committed by Martin Schwidefsky

parent 2e9996fcf8

commit 2dffdcbac9

2 changed files with 46 additions and 10 deletions

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43

arch/s390/include/asm/pgtable.h

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13

arch/s390/mm/vmem.c

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