linux-kernel - [PATCH] arm64: Change the location of DISCARDS

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Message-Id: <1604486932-18889-1-git-send-email-tangyouling@loongson.cn>
Date:   Wed,  4 Nov 2020 18:48:52 +0800
From:   Youling Tang <tangyouling@...ngson.cn>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, tangyouling@...ngson.cn
Subject: [PATCH] arm64: Change the location of DISCARDS

In the include/asm-generic/vmlinux.lds.h file, the "must be the last"
comment indicates that DISCARDS should be placed in the last position
of SECTIONS, like x86, mips, riscv, etc.

Signed-off-by: Youling Tang <tangyouling@...ngson.cn>
---
 arch/arm64/kernel/vmlinux.lds.S | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 1bda604..bf31074 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -109,12 +109,6 @@ SECTIONS
 	 * matching the same input section name.  There is no documented
 	 * order of matching.
 	 */
-	DISCARDS
-	/DISCARD/ : {
-		*(.interp .dynamic)
-		*(.dynsym .dynstr .hash .gnu.hash)
-	}
-
 	. = KIMAGE_VADDR;
 
 	.head.text : {
@@ -284,6 +278,13 @@ SECTIONS
 
 	.data.rel.ro : { *(.data.rel.ro) }
 	ASSERT(SIZEOF(.data.rel.ro) == 0, "Unexpected RELRO detected!")
+
+	/* Sections to be discarded */
+	DISCARDS
+	/DISCARD/ : {
+		*(.interp .dynamic)
+		*(.dynsym .dynstr .hash .gnu.hash)
+	}
 }
 
 #include "image-vars.h"
-- 
2.1.0