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-rw-r--r--include/asm-s390/lowcore.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-s390/lowcore.h b/include/asm-s390/lowcore.h
index 06583ed0bde..74f7389bd3e 100644
--- a/include/asm-s390/lowcore.h
+++ b/include/asm-s390/lowcore.h
@@ -362,6 +362,14 @@ static inline void set_prefix(__u32 address)
asm volatile("spx %0" : : "m" (address) : "memory");
}
+static inline __u32 store_prefix(void)
+{
+ __u32 address;
+
+ asm volatile("stpx %0" : "=m" (address));
+ return address;
+}
+
#define __PANIC_MAGIC 0xDEADC0DE
#endif