tree 3951d9022fb7525320029fb9cb18593f6a2d31ba
parent f75556081afe5a565c2ce200837406303a59ae2b
author Alexander Gordeev <agordeev@linux.ibm.com> 1584621890 +0100
committer Vasily Gorbik <gor@linux.ibm.com> 1585395972 +0100

s390/mm: cleanup init_new_context() callback

The set of values asce_limit may be assigned with is TASK_SIZE_MAX,
_REGION1_SIZE, _REGION2_SIZE and 0 as a special case if the callback
was called from execve().
Do VM_BUG_ON() if asce_limit is something else.

Save few CPU cycles by removing unnecessary asce_limit re-assignment
in case of 3-level task and redundant PGD entry type reconstruction.

Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>