linux-kernel - [PATCH] riscv: alternative: remove alternative boundary symbols in vdso

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Date:   Sat,  2 Sep 2023 10:25:10 +0800
From:   Xiao Wang <xiao.w.wang@...el.com>
To:     paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu
Cc:     jszhang@...nel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Xiao Wang <xiao.w.wang@...el.com>
Subject: [PATCH] riscv: alternative: remove alternative boundary symbols in vdso

Instruction patching for vdso is based on elf header parsing to get the
beginning and ending of .alternative section, the __alt_start and __alt_end
symbols defined in vdso linker script are not used, so this patch removes
them.

Signed-off-by: Xiao Wang <xiao.w.wang@...el.com>
---
 arch/riscv/kernel/vdso/vdso.lds.S | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/riscv/kernel/vdso/vdso.lds.S b/arch/riscv/kernel/vdso/vdso.lds.S
index 82ce64900f3d..d43fd7c7dd11 100644
--- a/arch/riscv/kernel/vdso/vdso.lds.S
+++ b/arch/riscv/kernel/vdso/vdso.lds.S
@@ -42,9 +42,7 @@ SECTIONS
 
 	. = ALIGN(4);
 	.alternative : {
-		__alt_start = .;
 		*(.alternative)
-		__alt_end = .;
 	}
 
 	.data		: {
-- 
2.25.1