Merge: x86/entry: Add __init to ia32_emulation_override_cmdline()

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/6718

JIRA: https://issues.redhat.com/browse/RHEL-52969

upstream
========
commit b2f10aa
Author: Vitaly Kuznetsov <[email protected]>
Date: Tue Dec 10 16:16:50 2024 +0100

description
===========
ia32_emulation_override_cmdline() is an early_param() arg and these
are only needed at boot time. In fact, all other early_param() functions
in arch/x86 seem to have '__init' annotation and
ia32_emulation_override_cmdline() is the only exception.

Fixes: a11e097 ("x86: Make IA32_EMULATION boot time configurable")
    Signed-off-by: Vitaly Kuznetsov <[email protected]>
    Signed-off-by: Dave Hansen <[email protected]>
    Reviewed-by: Nikolay Borisov <[email protected]>
Link: https://lore.kernel.org/all/20241210151650.1746022-1-vkuznets%40redhat.com

Signed-off-by: Michael Petlan <[email protected]>

Approved-by: Vitaly Kuznetsov <[email protected]>
Approved-by: Steve Best <[email protected]>
Approved-by: CKI KWF Bot <[email protected]>

Merged-by: Augusto Caringi <[email protected]>

Author: caringi

arch/x86/entry/common.c

@@ -142,7 +142,7 @@ static __always_inline int syscall_32_enter(struct pt_regs *regs)
 #ifdef CONFIG_IA32_EMULATION
 bool __ia32_enabled __ro_after_init = !IS_ENABLED(CONFIG_IA32_EMULATION_DEFAULT_DISABLED);
 
-static int ia32_emulation_override_cmdline(char *arg)
+static int __init ia32_emulation_override_cmdline(char *arg)
 {
 	return kstrtobool(arg, &__ia32_enabled);
 }