[PATCH v1] RISC-V: define RUNTIME_DISCARD_EXIT

Conor Dooley
2023-01-02T12:50:32Z

From: Conor Dooley <conor.dooley@microchip.com>

Masahiro noted:
> arch/riscv/kernel/vmlinux.lds.S clearly says:
> /* we have to discard exit text and such at runtime, not link time */
> [...]
> so riscv should define RUNTIME_DISCARD_EXIT like x86, arm64.

As things stand, no ill comes of this - but if "DISCARDS" was to be
re-ordered in the linker script, linking would fail.
Do as suggested by Masahiro and define RUNTIME_DISCARD_EXIT.

Link: https://lore.kernel.org/all/CAK7LNAT39aZEw=0209ovYZ2kxtOaA2a51=XD9=LqYHjkTOEK4g@mail.gmail.com/
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
---
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"
--
2.39.0

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