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s390/syscall: fix single stepped system calls
author
Martin Schwidefsky
<schwidefsky@de.ibm.com>
Mon, 20 Feb 2017 08:51:36 +0000
(09:51 +0100)
committer
Martin Schwidefsky
<schwidefsky@de.ibm.com>
Mon, 20 Feb 2017 11:38:01 +0000
(12:38 +0100)
Fix PER tracing of system calls after git commit
34525e1f7e8dc478
"s390: store breaking event address only for program checks"
broke it.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/entry.S
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diff --git
a/arch/s390/kernel/entry.S
b/arch/s390/kernel/entry.S
index
34ab7e8
..
db469fa
100644
(file)
--- a/
arch/s390/kernel/entry.S
+++ b/
arch/s390/kernel/entry.S
@@
-545,6
+545,7
@@
ENTRY(pgm_check_handler)
#
.Lpgm_svcper:
mvc __LC_RETURN_PSW(8),__LC_SVC_NEW_PSW
+ lghi %r13,__TASK_thread
larl %r14,.Lsysc_per
stg %r14,__LC_RETURN_PSW+8
lghi %r14,_PIF_SYSCALL | _PIF_PER_TRAP