linux-kernel - [PATCH] x86/alternatives: Fix section mismatch warnings

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Date:   Sat, 13 May 2023 18:01:46 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     X86 ML <x86@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86/alternatives: Fix section mismatch warnings

From: "Borislav Petkov (AMD)" <bp@...en8.de>

Fix stuff like:

  WARNING: modpost: vmlinux.o: section mismatch in reference: \
  __optimize_nops (section: .text) -> debug_alternative (section: .init.data)

Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
---
 arch/x86/kernel/alternative.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 3bb0a5f61e8c..93aa95afd005 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -193,8 +193,8 @@ static int skip_nops(u8 *instr, int offset, int len)
  * Optimize a sequence of NOPs, possibly preceded by an unconditional jump
  * to the end of the NOP sequence into a single NOP.
  */
-static bool __optimize_nops(u8 *instr, size_t len, struct insn *insn,
-			    int *next, int *prev, int *target)
+static bool __init_or_module
+__optimize_nops(u8 *instr, size_t len, struct insn *insn, int *next, int *prev, int *target)
 {
 	int i = *next - insn->length;
 
@@ -765,7 +765,7 @@ void __init_or_module noinline apply_returns(s32 *start, s32 *end) { }
 
 #ifdef CONFIG_X86_KERNEL_IBT
 
-static void poison_endbr(void *addr, bool warn)
+static void __init_or_module poison_endbr(void *addr, bool warn)
 {
 	u32 endbr, poison = gen_endbr_poison();
 
-- 
2.35.1