linux-kernel - [PATCH 5.19 0040/1157] KVM: x86: Tag kvm_mmu_x86_module_init() with _

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Message-Id: <20220815180441.036484267@linuxfoundation.org>
Date:   Mon, 15 Aug 2022 19:49:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Kai Huang <kai.huang@...el.com>,
        Michael Roth <michael.roth@....com>,
        Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: [PATCH 5.19 0040/1157] KVM: x86: Tag kvm_mmu_x86_module_init() with __init

From: Sean Christopherson <seanjc@...gle.com>

commit 982bae43f11c37b51d2f1961bb25ef7cac3746fa upstream.

Mark kvm_mmu_x86_module_init() with __init, the entire reason it exists
is to initialize variables when kvm.ko is loaded, i.e. it must never be
called after module initialization.

Fixes: 1d0e84806047 ("KVM: x86/mmu: Resolve nx_huge_pages when kvm.ko is loaded")
Cc: stable@...r.kernel.org
Reviewed-by: Kai Huang <kai.huang@...el.com>
Tested-by: Michael Roth <michael.roth@....com>
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
Message-Id: <20220803224957.1285926-2-seanjc@...gle.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/x86/include/asm/kvm_host.h |    2 +-
 arch/x86/kvm/mmu/mmu.c          |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1654,7 +1654,7 @@ static inline int kvm_arch_flush_remote_
 #define kvm_arch_pmi_in_guest(vcpu) \
 	((vcpu) && (vcpu)->arch.handling_intr_from_guest)
 
-void kvm_mmu_x86_module_init(void);
+void __init kvm_mmu_x86_module_init(void);
 int kvm_mmu_vendor_module_init(void);
 void kvm_mmu_vendor_module_exit(void);
 
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -6275,7 +6275,7 @@ static int set_nx_huge_pages(const char
  * nx_huge_pages needs to be resolved to true/false when kvm.ko is loaded, as
  * its default value of -1 is technically undefined behavior for a boolean.
  */
-void kvm_mmu_x86_module_init(void)
+void __init kvm_mmu_x86_module_init(void)
 {
 	if (nx_huge_pages == -1)
 		__set_nx_huge_pages(get_nx_auto_mode());