Merge branch 'core/core' into x86/build, to prevent conflicts

Signed-off-by: Ingo Molnar <mingo@kernel.org>

2 files changed, 69 insertions, 7 deletions

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 7b75ff6e2fce..f09ee3c544bc 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -253,10 +253,6 @@
 	STRUCT_ALIGN();							\
 	*(__tracepoints)						\
 	/* implement dynamic printk debug */				\
-	. = ALIGN(8);                                                   \
-	__start___jump_table = .;					\
-	KEEP(*(__jump_table))                                           \
-	__stop___jump_table = .;					\
 	. = ALIGN(8);							\
 	__start___verbose = .;						\
 	KEEP(*(__verbose))                                              \
@@ -300,6 +296,12 @@
 	. = __start_init_task + THREAD_SIZE;				\
 	__end_init_task = .;
 
+#define JUMP_TABLE_DATA							\
+	. = ALIGN(8);							\
+	__start___jump_table = .;					\
+	KEEP(*(__jump_table))						\
+	__stop___jump_table = .;
+
 /*
  * Allow architectures to handle ro_after_init data on their
  * own by defining an empty RO_AFTER_INIT_DATA.
@@ -308,6 +310,7 @@
 #define RO_AFTER_INIT_DATA						\
 	__start_ro_after_init = .;					\
 	*(.data..ro_after_init)						\
+	JUMP_TABLE_DATA							\
 	__end_ro_after_init = .;
 #endif
 
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
index 1a0b6f17a5d6..5df6a621e464 100644
--- a/include/linux/jump_label.h
+++ b/include/linux/jump_label.h
@@ -119,6 +119,68 @@ struct static_key {
 
 #ifdef HAVE_JUMP_LABEL
 #include <asm/jump_label.h>
+
+#ifndef __ASSEMBLY__
+#ifdef CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE
+
+struct jump_entry {
+	s32 code;
+	s32 target;
+	long key;	// key may be far away from the core kernel under KASLR
+};
+
+static inline unsigned long jump_entry_code(const struct jump_entry *entry)
+{
+	return (unsigned long)&entry->code + entry->code;
+}
+
+static inline unsigned long jump_entry_target(const struct jump_entry *entry)
+{
+	return (unsigned long)&entry->target + entry->target;
+}
+
+static inline struct static_key *jump_entry_key(const struct jump_entry *entry)
+{
+	long offset = entry->key & ~3L;
+
+	return (struct static_key *)((unsigned long)&entry->key + offset);
+}
+
+#else
+
+static inline unsigned long jump_entry_code(const struct jump_entry *entry)
+{
+	return entry->code;
+}
+
+static inline unsigned long jump_entry_target(const struct jump_entry *entry)
+{
+	return entry->target;
+}
+
+static inline struct static_key *jump_entry_key(const struct jump_entry *entry)
+{
+	return (struct static_key *)((unsigned long)entry->key & ~3UL);
+}
+
+#endif
+
+static inline bool jump_entry_is_branch(const struct jump_entry *entry)
+{
+	return (unsigned long)entry->key & 1UL;
+}
+
+static inline bool jump_entry_is_init(const struct jump_entry *entry)
+{
+	return (unsigned long)entry->key & 2UL;
+}
+
+static inline void jump_entry_set_init(struct jump_entry *entry)
+{
+	entry->key |= 2;
+}
+
+#endif
 #endif
 
 #ifndef __ASSEMBLY__
@@ -151,7 +213,6 @@ extern struct jump_entry __start___jump_table[];
 extern struct jump_entry __stop___jump_table[];
 
 extern void jump_label_init(void);
-extern void jump_label_invalidate_initmem(void);
 extern void jump_label_lock(void);
 extern void jump_label_unlock(void);
 extern void arch_jump_label_transform(struct jump_entry *entry,
@@ -199,8 +260,6 @@ static __always_inline void jump_label_init(void)
 	static_key_initialized = true;
 }
 
-static inline void jump_label_invalidate_initmem(void) {}
-
 static __always_inline bool static_key_false(struct static_key *key)
 {
 	if (unlikely(static_key_count(key) > 0))