| commit | 987ad70a4d90cf0e70dba43ece02c2e2219e092c | [log] [tgz] |
|---|---|---|
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | Tue Jul 10 11:24:18 2007 +0200 |
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | Tue Jul 10 11:24:51 2007 +0200 |
| tree | 5597a511a31647acd7a11160d9db60a53f388d80 | |
| parent | 3d62149f025134cd69c2fef2a2ccfac3c3c2054f [diff] |
[S390] system call optimization. After the in-kernel system call has been remove the system call path can be optimized. The problem state bit of the old psw is always set between system_call and sysc_do_svc. SAVE_ALL_SVC uses this information to avoid two instructions. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>