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From:   Jisheng Zhang <jszhang@kernel.org>
To:     Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Kees Cook <keescook@chromium.org>,
        Nathan Chancellor <nathan@kernel.org>
Cc:     Conor Dooley <conor@kernel.org>, linux-riscv@lists.infradead.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v2 1/5] riscv: lds: define RUNTIME_DISCARD_EXIT
Date:   Thu, 19 Jan 2023 23:54:13 +0800
Message-Id: <20230119155417.2600-2-jszhang@kernel.org>
In-Reply-To: <20230119155417.2600-1-jszhang@kernel.org>
References: <20230119155417.2600-1-jszhang@kernel.org>
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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