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| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2020-03-19 13:44:50 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2020-03-28 12:46:12 +0100 |
| commit | 1058c163dc31b3335c9cf7c4fa42ccf87be73017 (patch) | |
| tree | 3951d9022fb7525320029fb9cb18593f6a2d31ba /lib/ubsan.c | |
| parent | f75556081afe5a565c2ce200837406303a59ae2b (diff) | |
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>
Diffstat (limited to 'lib/ubsan.c')
0 files changed, 0 insertions, 0 deletions