s390/compat: fix PSW32_USER_BITS definition

PSW32_USER_BITS should define the primary address space for user space
instead of the home address space.
Symptom of this bug is that gdb doesn't work in compat mode.

The bug was introduced with e258d719ff28 "s390/uaccess: always run the kernel
in home space" and f26946d7ecad "s390/compat: make psw32_user_bits a constant
value again".

Cc: stable@vger.kernel.org # v3.13+
Reported-by: Andreas Arnez <arnez@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index 4bf9da03591e7abda64ab4632f511c16b7734d16..5d7e8cf83bd6c7d53b5f2a34fc2120add4cfa2d8 100644 (file)
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -38,7 +38,8 @@
 
 #define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
                         PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
-                        PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | PSW32_ASC_HOME)
+                        PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
+                        PSW32_ASC_PRIMARY)
 
 #define COMPAT_USER_HZ         100
 #define COMPAT_UTS_MACHINE     "s390\0\0\0\0"