[PATCH v2 1/2] arm64/build: Use common DISCARDS in linker script

[Kees Cook]

Use the common DISCARDS rule for the linker script in an effort to
regularize the linker script to prepare for warning on orphaned
sections. Additionally clean up left-over no-op macros.

Signed-off-by: Kees Cook <keesc...@chromium.org>
Acked-by: Will Deacon <w...@kernel.org>
---
 arch/arm64/kernel/vmlinux.lds.S | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 6827da7f3aa5..5427f502c3a6 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -6,6 +6,7 @@
  */
 
 #define RO_EXCEPTION_TABLE_ALIGN       8
+#define RUNTIME_DISCARD_EXIT
 
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/cache.h>
@@ -89,10 +90,8 @@ SECTIONS
         * matching the same input section name.  There is no documented
         * order of matching.
         */
+       DISCARDS
        /DISCARD/ : {
-               EXIT_CALL
-               *(.discard)
-               *(.discard.*)
                *(.interp .dynamic)
                *(.dynsym .dynstr .hash .gnu.hash)
                *(.eh_frame)
-- 
2.25.1