linux-kernel - [PATCH] KVM: arm64: remove incorrect _

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Date:   Sun,  3 Jan 2021 15:00:50 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Marc Zyngier <maz@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, James Morse <james.morse@....com>,
        Julien Thierry <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        David Brazdil <dbrazdil@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Andrew Scull <ascull@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        linux-kernel@...r.kernel.org
Subject: [PATCH] KVM: arm64: remove incorrect __init annotation

From: Arnd Bergmann <arnd@...db.de>

When hyp_cpu_pm_exit() is not inlined, it causes a link time warning:

WARNING: modpost: vmlinux.o(.text+0x39974): Section mismatch in reference from the function kvm_arch_init() to the function .init.text:hyp_cpu_pm_exit()
The function kvm_arch_init() references
the function __init hyp_cpu_pm_exit().
This is often because kvm_arch_init lacks a __init
annotation or the annotation of hyp_cpu_pm_exit is wrong.

This is not only called at boot time, so remove the annotation
to prevent undefined behavior in case it gets called after being
freed.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm64/kvm/arm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 6e637d2b4cfb..71a49eae9ea0 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1574,12 +1574,12 @@ static struct notifier_block hyp_init_cpu_pm_nb = {
 	.notifier_call = hyp_init_cpu_pm_notifier,
 };
 
-static void __init hyp_cpu_pm_init(void)
+static void hyp_cpu_pm_init(void)
 {
 	if (!is_protected_kvm_enabled())
 		cpu_pm_register_notifier(&hyp_init_cpu_pm_nb);
 }
-static void __init hyp_cpu_pm_exit(void)
+static void hyp_cpu_pm_exit(void)
 {
 	if (!is_protected_kvm_enabled())
 		cpu_pm_unregister_notifier(&hyp_init_cpu_pm_nb);
-- 
2.29.2