s390/syscall: fix single stepped system calls

Fix PER tracing of system calls after git commit 34525e1 "s390: store breaking event address only for program checks" broke it. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
mariux64 · Feb 20, 2017 · d24b98e · d24b98e
1 parent 50a0d46
commit d24b98e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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