1 files changed, 22 insertions, 0 deletions
diff --git a/arch/s390/include/asm/nospec-branch.h b/arch/s390/include/asm/nospec-branch.h
new file mode 100644
index 000000000..82725cf78
--- /dev/null
+++ b/arch/s390/include/asm/nospec-branch.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_S390_EXPOLINE_H
+#define _ASM_S390_EXPOLINE_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+extern int nospec_disable;
+
+void nospec_init_branches(void);
+void nospec_auto_detect(void);
+void nospec_revert(s32 *start, s32 *end);
+
+static inline bool nospec_uses_trampoline(void)
+{
+	return __is_defined(CC_USING_EXPOLINE) && !nospec_disable;
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_S390_EXPOLINE_H */