[PATCH 2/4] vmlinux.lds.h: Split .static_call_sites from .static_call_tramp_key

[Kees Cook]

These two sections are ro_after_init and .rodata respectively. While
they will ultimately become read-only, there's no reason to confuse
their macro names.

Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: linux-arch@xxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
 include/asm-generic/vmlinux.lds.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 70c74fdf9c9b..4781a8154254 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -396,17 +396,22 @@
 	. = __start_init_task + THREAD_SIZE;				\
 	__end_init_task = .;
 
+/* Sorted during __init. */
 #define JUMP_TABLE_RO_AFTER_INIT_DATA					\
 	. = ALIGN(8);							\
 	__start___jump_table = .;					\
 	KEEP(*(__jump_table))						\
 	__stop___jump_table = .;
 
+/* Sorted during __init. */
 #define STATIC_CALL_RO_AFTER_INIT_DATA					\
 	. = ALIGN(8);							\
 	__start_static_call_sites = .;					\
 	KEEP(*(.static_call_sites))					\
 	__stop_static_call_sites = .;					\
+
+#define STATIC_CALL_RODATA						\
+	. = ALIGN(8);							\
 	__start_static_call_tramp_key = .;				\
 	KEEP(*(.static_call_tramp_key))					\
 	__stop_static_call_tramp_key = .;
@@ -434,6 +439,7 @@
 		__start_rodata = .;					\
 		*(.rodata) *(.rodata.*)					\
 		SCHED_RODATA						\
+		STATIC_CALL_RODATA					\
 		RO_AFTER_INIT_DATA	/* Read only after init */	\
 		. = ALIGN(8);						\
 		__start___tracepoints_ptrs = .;				\
-- 
2.30.2