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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	[thread overview]
Message-ID: <20230119155417.2600-2-jszhang@kernel.org> (raw)
In-Reply-To: <20230119155417.2600-1-jszhang@kernel.org>

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


WARNING: multiple messages have this Message-ID (diff)
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	[thread overview]
Message-ID: <20230119155417.2600-2-jszhang@kernel.org> (raw)
In-Reply-To: <20230119155417.2600-1-jszhang@kernel.org>

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


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  reply	other threads:[~2023-01-19 16:05 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-19 15:54 [PATCH v2 0/5] riscv: improve link and support ARCH_WANT_LD_ORPHAN_WARN Jisheng Zhang
2023-01-19 15:54 ` Jisheng Zhang
2023-01-19 15:54 ` Jisheng Zhang [this message]
2023-01-19 15:54   ` [PATCH v2 1/5] riscv: lds: define RUNTIME_DISCARD_EXIT Jisheng Zhang
2023-01-19 18:32   ` Conor Dooley
2023-01-19 18:32     ` Conor Dooley
2023-01-19 15:54 ` [PATCH v2 2/5] riscv: vmlinux.lds.S: explicitly catch .rela.dyn symbols Jisheng Zhang
2023-01-19 15:54   ` Jisheng Zhang
2023-01-19 15:54 ` [PATCH v2 3/5] riscv: vmlinux.lds.S: explicitly catch .riscv.attributes sections Jisheng Zhang
2023-01-19 15:54   ` Jisheng Zhang
2023-01-19 15:54 ` [PATCH v2 4/5] riscv: vmlinux.lds.S: explicitly catch .init.bss sections from EFI stub Jisheng Zhang
2023-01-19 15:54   ` Jisheng Zhang
2023-01-19 15:54 ` [PATCH v2 5/5] riscv: select ARCH_WANT_LD_ORPHAN_WARN for !XIP_KERNEL Jisheng Zhang
2023-01-19 15:54   ` Jisheng Zhang
2023-01-20  8:06   ` Conor Dooley
2023-01-20  8:06     ` Conor Dooley
2023-02-22 15:00 ` [PATCH v2 0/5] riscv: improve link and support ARCH_WANT_LD_ORPHAN_WARN patchwork-bot+linux-riscv
2023-02-22 15:00   ` patchwork-bot+linux-riscv

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