#include <linux/types.h>
#include <linux/stddef.h>
+
+/*
+ * Alternative inline assembly for SMP.
+ *
+ * The LOCK_PREFIX macro defined here replaces the LOCK and
+ * LOCK_PREFIX macros used everywhere in the source tree.
+ *
+ * SMP alternatives use the same data structures as the other
+ * alternatives and the X86_FEATURE_UP flag to indicate the case of a
+ * UP system running a SMP kernel. The existing apply_alternatives()
+ * works fine for patching a SMP kernel for UP.
+ *
+ * The SMP alternative tables can be kept after boot and contain both
+ * UP and SMP versions of the instructions to allow switching back to
+ * SMP at runtime, when hotplugging in a new CPU, which is especially
+ * useful in virtualized environments.
+ *
+ * The very common lock prefix is handled as special case in a
+ * separate table which is a pure address list without replacement ptr
+ * and size information. That keeps the table sizes small.
+ */
+
+#ifdef CONFIG_SMP
+#define LOCK_PREFIX \
+ ".section .smp_locks,\"a\"\n" \
+ " .align 8\n" \
+ " .quad 661f\n" /* address */ \
+ ".previous\n" \
+ "661:\n\tlock; "
+
+#else /* ! CONFIG_SMP */
+#define LOCK_PREFIX ""
+#endif
+
+/* This must be included *after* the definition of LOCK_PREFIX */
#include <asm/cpufeature.h>
struct alt_instr {
u8 pad[5];
};
+extern void alternative_instructions(void);
extern void apply_alternatives(struct alt_instr *start, struct alt_instr *end);
struct module;
".previous" : output : [feat] "i" (feature), ##input)
/*
- * Alternative inline assembly for SMP.
- *
- * The LOCK_PREFIX macro defined here replaces the LOCK and
- * LOCK_PREFIX macros used everywhere in the source tree.
- *
- * SMP alternatives use the same data structures as the other
- * alternatives and the X86_FEATURE_UP flag to indicate the case of a
- * UP system running a SMP kernel. The existing apply_alternatives()
- * works fine for patching a SMP kernel for UP.
- *
- * The SMP alternative tables can be kept after boot and contain both
- * UP and SMP versions of the instructions to allow switching back to
- * SMP at runtime, when hotplugging in a new CPU, which is especially
- * useful in virtualized environments.
- *
- * The very common lock prefix is handled as special case in a
- * separate table which is a pure address list without replacement ptr
- * and size information. That keeps the table sizes small.
+ * use this macro(s) if you need more than one output parameter
+ * in alternative_io
*/
-
-#ifdef CONFIG_SMP
-#define LOCK_PREFIX \
- ".section .smp_locks,\"a\"\n" \
- " .align 8\n" \
- " .quad 661f\n" /* address */ \
- ".previous\n" \
- "661:\n\tlock; "
-
-#else /* ! CONFIG_SMP */
-#define LOCK_PREFIX ""
-#endif
+#define ASM_OUTPUT2(a, b) a, b
struct paravirt_patch;
#ifdef CONFIG_PARAVIRT
static inline void
apply_paravirt(struct paravirt_patch *start, struct paravirt_patch *end)
{}
-#define __start_parainstructions NULL
-#define __stop_parainstructions NULL
+#define __parainstructions NULL
+#define __parainstructions_end NULL
#endif
+extern void text_poke(void *addr, unsigned char *opcode, int len);
+
#endif /* _X86_64_ALTERNATIVE_H */