diff options
| author | Gerald Schaefer <[email protected]> | 2020-06-23 19:10:08 +0200 |
|---|---|---|
| committer | Vasily Gorbik <[email protected]> | 2020-10-02 14:40:48 +0200 |
| commit | 5627b9224b00334e4c91122ebbb8536a9a575969 (patch) | |
| tree | 3d7b4efde26c611e44589a8379a6917cb302d37d /tools/perf/scripts/python/syscall-counts.py | |
| parent | bd37b36832f62bf42ab66da8744191d99252a6e3 (diff) | |
s390/ipl: add support to control memory clearing for nvme re-IPL
Re-IPL for nvme is currently done by using diag 308 with the "Load Clear"
subcode, which means that all memory will be cleared.
This can increase re-IPL duration considerably on very large machines.
For list-directed IPL like nvme or fcp IPL, a "Load Normal" subcode was
introduced with z14. The "Load Normal" diag 308 subcode allows to re-IPL
without clearing memory.
This patch adds a new "clear" sysfs attribute to /sys/firmware/reipl/nvme,
which can be set to either "0" or "1" to disable or enable re-IPL with
memory clearing. The default value is "0", which disables memory clearing.
Signed-off-by: Gerald Schaefer <[email protected]>
Reviewed-by: Vasily Gorbik <[email protected]>
Tested-by: Alexander Egorenkov <[email protected]>
Signed-off-by: Vasily Gorbik <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions