linux-kernel - [PATCH] m68k: Initialize jump labels early during setup

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Message-Id: <20241016-fix-jump-label-v1-1-eb74c5f68405@yoseli.org>
Date: Wed, 16 Oct 2024 18:18:55 +0200
From: Jean-Michel Hautbois <jeanmichel.hautbois@...eli.org>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: linux-m68k@...ts.linux-m68k.org, linux-kernel@...r.kernel.org, 
 Jean-Michel Hautbois <jeanmichel.hautbois@...eli.org>
Subject: [PATCH] m68k: Initialize jump labels early during setup_arch()

The jump_label_init() should be called from setup_arch() very
early for proper functioning of jump label support.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@...eli.org>
---
 arch/m68k/kernel/setup_mm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index 10310b04f77d8d79bec858c6989c2cf21d0af557..15c1a595a1de0bef7e6565b7a6e02d773c23bb8c 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -249,7 +249,11 @@ void __init setup_arch(char **cmdline_p)
 	process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
 	*cmdline_p = m68k_command_line;
 	memcpy(boot_command_line, *cmdline_p, CL_SIZE);
-
+	/*
+	 * Initialise the static keys early as they may be enabled by the
+	 * cpufeature code and early parameters.
+	 */
+	jump_label_init();
 	parse_early_param();
 
 	switch (m68k_machtype) {

---
base-commit: 8e929cb546ee42c9a61d24fae60605e9e3192354
change-id: 20241016-fix-jump-label-c083e90cddc6

Best regards,
-- 
Jean-Michel Hautbois <jeanmichel.hautbois@...eli.org>