linux-kernel - [RFC PATCH v4 30/37] arm64: head: Mark constants as data

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Message-ID: <20220429094355.122389-31-chenzhongjin@huawei.com>
Date:   Fri, 29 Apr 2022 17:43:48 +0800
From:   Chen Zhongjin <chenzhongjin@...wei.com>
To:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-arch@...r.kernel.org>
CC:     <jthierry@...hat.com>, <catalin.marinas@....com>,
        <will@...nel.org>, <masahiroy@...nel.org>, <jpoimboe@...hat.com>,
        <peterz@...radead.org>, <ycote@...hat.com>,
        <herbert@...dor.apana.org.au>, <mark.rutland@....com>,
        <davem@...emloft.net>, <ardb@...nel.org>, <maz@...nel.org>,
        <tglx@...utronix.de>, <luc.vanoostenryck@...il.com>,
        <chenzhongjin@...wei.com>
Subject: [RFC PATCH v4 30/37] arm64: head: Mark constants as data

From: Julien Thierry <jthierry@...hat.com>

Add data annotations to constants part of the image header.

Signed-off-by: Julien Thierry <jthierry@...hat.com>
---
 arch/arm64/kernel/head.S | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index 6db9c3603bd8..64527718d4c2 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -62,9 +62,10 @@
 	/*
 	 * DO NOT MODIFY. Image header expected by Linux boot-loaders.
 	 */
-	efi_signature_nop			// special NOP to identity as PE/COFF executable
+SYM_DATA_LOCAL(efi_nop, efi_signature_nop)	// special NOP to identity as PE/COFF executable
 	b	primary_entry			// branch to kernel start, magic
-	.quad	0				// Image load offset from start of RAM, little-endian
+SYM_DATA_LOCAL(_zero_reserved, .quad	0)	// Image load offset from start of RAM, little-endian
+SYM_DATA_START_LOCAL(_arm64_common_header)
 	le64sym	_kernel_size_le			// Effective size of kernel image, little-endian
 	le64sym	_kernel_flags_le		// Informative flags, little-endian
 	.quad	0				// reserved
@@ -72,6 +73,7 @@
 	.quad	0				// reserved
 	.ascii	ARM64_IMAGE_MAGIC		// Magic number
 	.long	.Lpe_header_offset		// Offset to the PE header.
+SYM_DATA_END(_arm64_common_header)
 
 	__EFI_PE_HEADER
 
-- 
2.17.1