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s390/syscall: fix single stepped system calls

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Fix PER tracing of system calls after git commit 34525e1f7e
"s390: store breaking event address only for program checks"
broke it.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2017-02-20 09:51:36 +01:00
parent 50a0d46c98
commit d24b98e3a9
1 changed files with 1 additions and 0 deletions
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arch/s390/kernel/entry.S
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@@ -545,6 +545,7 @@ ENTRY(pgm_check_handler)
# #
.Lpgm_svcper: .Lpgm_svcper:
mvc __LC_RETURN_PSW(8),__LC_SVC_NEW_PSW mvc __LC_RETURN_PSW(8),__LC_SVC_NEW_PSW
lghi %r13,__TASK_thread
larl %r14,.Lsysc_per larl %r14,.Lsysc_per
stg %r14,__LC_RETURN_PSW+8 stg %r14,__LC_RETURN_PSW+8
lghi %r14,_PIF_SYSCALL | _PIF_PER_TRAP lghi %r14,_PIF_SYSCALL | _PIF_PER_TRAP