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Diffstat (limited to 'include/asm-s390/system.h')
-rw-r--r--include/asm-s390/system.h21
1 files changed, 15 insertions, 6 deletions
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index 81514d76edc..e3cb3ce1d24 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -16,6 +16,7 @@
#include <asm/types.h>
#include <asm/ptrace.h>
#include <asm/setup.h>
+#include <asm/processor.h>
#ifdef __KERNEL__
@@ -331,9 +332,6 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
#ifdef __s390x__
-#define __load_psw(psw) \
- __asm__ __volatile__("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc" );
-
#define __ctl_load(array, low, high) ({ \
typedef struct { char _[sizeof(array)]; } addrtype; \
__asm__ __volatile__ ( \
@@ -390,9 +388,6 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
#else /* __s390x__ */
-#define __load_psw(psw) \
- __asm__ __volatile__("lpsw 0(%0)" : : "a" (&psw) : "cc" );
-
#define __ctl_load(array, low, high) ({ \
typedef struct { char _[sizeof(array)]; } addrtype; \
__asm__ __volatile__ ( \
@@ -451,6 +446,20 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
/* For spinlocks etc */
#define local_irq_save(x) ((x) = local_irq_disable())
+/*
+ * Use to set psw mask except for the first byte which
+ * won't be changed by this function.
+ */
+static inline void
+__set_psw_mask(unsigned long mask)
+{
+ local_save_flags(mask);
+ __load_psw_mask(mask);
+}
+
+#define local_mcck_enable() __set_psw_mask(PSW_KERNEL_BITS)
+#define local_mcck_disable() __set_psw_mask(PSW_KERNEL_BITS & ~PSW_MASK_MCHECK)
+
#ifdef CONFIG_SMP
extern void smp_ctl_set_bit(int cr, int bit);