linux-kernel - [PATCH v7 16/31] KVM: VMX: Mark __kvm_is_using_evmcs static key as __ro_after

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Message-ID: <20251114150133.1056710-17-vschneid@redhat.com>
Date: Fri, 14 Nov 2025 16:01:18 +0100
From: Valentin Schneider <vschneid@...hat.com>
To: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	rcu@...r.kernel.org,
	x86@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
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Cc: Sean Christopherson <seanjc@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
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	"H. Peter Anvin" <hpa@...or.com>,
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	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
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	Marcelo Tosatti <mtosatti@...hat.com>,
	Daniel Wagner <dwagner@...e.de>,
	Petr Tesarik <ptesarik@...e.com>,
	Shrikanth Hegde <sshegde@...ux.ibm.com>
Subject: [PATCH v7 16/31] KVM: VMX: Mark __kvm_is_using_evmcs static key as __ro_after_init

The static key is only ever enabled in

  __init hv_init_evmcs()

so mark it appropriately as __ro_after_init.

Reported-by: Sean Christopherson <seanjc@...gle.com>
Signed-off-by: Valentin Schneider <vschneid@...hat.com>
Acked-by: Sean Christopherson <seanjc@...gle.com>
---
 arch/x86/kvm/vmx/vmx_onhyperv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx/vmx_onhyperv.c b/arch/x86/kvm/vmx/vmx_onhyperv.c
index b9a8b91166d02..ff3d80c9565bb 100644
--- a/arch/x86/kvm/vmx/vmx_onhyperv.c
+++ b/arch/x86/kvm/vmx/vmx_onhyperv.c
@@ -3,7 +3,7 @@
 #include "capabilities.h"
 #include "vmx_onhyperv.h"
 
-DEFINE_STATIC_KEY_FALSE(__kvm_is_using_evmcs);
+DEFINE_STATIC_KEY_FALSE_RO(__kvm_is_using_evmcs);
 
 /*
  * KVM on Hyper-V always uses the latest known eVMCSv1 revision, the assumption
-- 
2.51.0