linux-kernel - [PATCH v5 29/33] arm64: compat: Move VDSO code to .rodata section

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Message-ID: <20220622154920.95075-30-chenzhongjin@huawei.com>
Date:   Wed, 22 Jun 2022 23:49:16 +0800
From:   Chen Zhongjin <chenzhongjin@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <linux-arch@...r.kernel.org>,
        <linuxppc-dev@...ts.ozlabs.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kbuild@...r.kernel.org>, <live-patching@...r.kernel.org>
CC:     <jpoimboe@...nel.org>, <peterz@...radead.org>,
        <catalin.marinas@....com>, <will@...nel.org>,
        <masahiroy@...nel.org>, <michal.lkml@...kovi.net>,
        <ndesaulniers@...gle.com>, <mark.rutland@....com>,
        <pasha.tatashin@...een.com>, <broonie@...nel.org>,
        <chenzhongjin@...wei.com>, <rmk+kernel@...linux.org.uk>,
        <madvenka@...ux.microsoft.com>, <christophe.leroy@...roup.eu>
Subject: [PATCH v5 29/33] arm64: compat: Move VDSO code to .rodata section

VDSO code should be inside .rodata.

Now code in kuser32.S and sigreturn32.S are inside .text section and never
executed.
Move them to .rodata.

Signed-off-by: Chen Zhongjin <chenzhongjin@...wei.com>
---
 arch/arm64/kernel/kuser32.S     | 1 +
 arch/arm64/kernel/sigreturn32.S | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/kuser32.S b/arch/arm64/kernel/kuser32.S
index 42bd8c0c60e0..692e9d2e31e5 100644
--- a/arch/arm64/kernel/kuser32.S
+++ b/arch/arm64/kernel/kuser32.S
@@ -15,6 +15,7 @@
 
 #include <asm/unistd.h>
 
+	.section .rodata
 	.align	5
 	.globl	__kuser_helper_start
 __kuser_helper_start:
diff --git a/arch/arm64/kernel/sigreturn32.S b/arch/arm64/kernel/sigreturn32.S
index 475d30d471ac..ccbd4aab4ba4 100644
--- a/arch/arm64/kernel/sigreturn32.S
+++ b/arch/arm64/kernel/sigreturn32.S
@@ -15,6 +15,7 @@
 
 #include <asm/unistd.h>
 
+	.section .rodata
 	.globl __aarch32_sigret_code_start
 __aarch32_sigret_code_start:
 
-- 
2.17.1