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-rw-r--r--arch/s390/Kconfig3
-rw-r--r--arch/s390/include/asm/percpu.h32
2 files changed, 8 insertions, 27 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index f4a3cc62d28..a14dba0e4d6 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -75,9 +75,6 @@ config VIRT_CPU_ACCOUNTING
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
def_bool y
-config HAVE_LEGACY_PER_CPU_AREA
- def_bool y
-
mainmenu "Linux Kernel Configuration"
config S390
diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h
index 408d60b4f75..f7ad8719d02 100644
--- a/arch/s390/include/asm/percpu.h
+++ b/arch/s390/include/asm/percpu.h
@@ -1,37 +1,21 @@
#ifndef __ARCH_S390_PERCPU__
#define __ARCH_S390_PERCPU__
-#include <linux/compiler.h>
-#include <asm/lowcore.h>
-
/*
* s390 uses its own implementation for per cpu data, the offset of
* the cpu local data area is cached in the cpu's lowcore memory.
- * For 64 bit module code s390 forces the use of a GOT slot for the
- * address of the per cpu variable. This is needed because the module
- * may be more than 4G above the per cpu area.
*/
-#if defined(__s390x__) && defined(MODULE)
-
-#define SHIFT_PERCPU_PTR(ptr,offset) (({ \
- extern int simple_identifier_##var(void); \
- unsigned long *__ptr; \
- asm ( "larl %0, %1@GOTENT" \
- : "=a" (__ptr) : "X" (ptr) ); \
- (typeof(ptr))((*__ptr) + (offset)); }))
-
-#else
-
-#define SHIFT_PERCPU_PTR(ptr, offset) (({ \
- extern int simple_identifier_##var(void); \
- unsigned long __ptr; \
- asm ( "" : "=a" (__ptr) : "0" (ptr) ); \
- (typeof(ptr)) (__ptr + (offset)); }))
+#define __my_cpu_offset S390_lowcore.percpu_offset
+/*
+ * For 64 bit module code, the module may be more than 4G above the
+ * per cpu area, use weak definitions to force the compiler to
+ * generate external references.
+ */
+#if defined(CONFIG_SMP) && defined(__s390x__) && defined(MODULE)
+#define ARCH_NEEDS_WEAK_PER_CPU
#endif
-#define __my_cpu_offset S390_lowcore.percpu_offset
-
#include <asm-generic/percpu.h>
#endif /* __ARCH_S390_PERCPU__ */