riscv discards .exit.* sections at run-time but doesn't define
RUNTIME_DISCARD_EXIT. However, the .exit.* sections are still allocated
and kept even if the generic DISCARDS would discard the sections due
to missing RUNTIME_DISCARD_EXIT, because the DISCARD sits at the end of
the linker script. Add the missing RUNTIME_DISCARD_EXIT define so that
it still works if we move DISCARD up or even at the beginning of the
linker script.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
---
 arch/riscv/kernel/vmlinux.lds.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
index 4e6c88aa4d87..07c19f2a288c 100644
--- a/arch/riscv/kernel/vmlinux.lds.S
+++ b/arch/riscv/kernel/vmlinux.lds.S
@@ -5,6 +5,7 @@
  */
 
 #define RO_EXCEPTION_TABLE_ALIGN	4
+#define RUNTIME_DISCARD_EXIT
 
 #ifdef CONFIG_XIP_KERNEL
 #include "vmlinux-xip.lds.S"
-- 
2.38.1

On Thu, Jan 19, 2023 at 11:54:13PM +0800, Jisheng Zhang wrote:
> riscv discards .exit.* sections at run-time but doesn't define
> RUNTIME_DISCARD_EXIT. However, the .exit.* sections are still allocated
> and kept even if the generic DISCARDS would discard the sections due
> to missing RUNTIME_DISCARD_EXIT, because the DISCARD sits at the end of
> the linker script. Add the missing RUNTIME_DISCARD_EXIT define so that
> it still works if we move DISCARD up or even at the beginning of the
> linker script.
> 
> Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
> Suggested-by: Masahiro Yamada <masahiroy@kernel.org>

Thought I left one of these against v1, either way:
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.