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-rw-r--r--include/asm-s390/ptrace.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-s390/ptrace.h b/include/asm-s390/ptrace.h
index 4eff8f2e3bf1..fc7c96edc697 100644
--- a/include/asm-s390/ptrace.h
+++ b/include/asm-s390/ptrace.h
@@ -276,7 +276,7 @@ typedef struct
#endif /* __s390x__ */
#define PSW_KERNEL_BITS (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_PRIMARY | \
- PSW_DEFAULT_KEY)
+ PSW_MASK_MCHECK | PSW_DEFAULT_KEY)
#define PSW_USER_BITS (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_HOME | \
PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | \
PSW_MASK_PSTATE | PSW_DEFAULT_KEY)
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