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@google.com>
Signed-off-by: Valentin Schneider <vschneid@redhat.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

On Fri, Oct 10, 2025, Valentin Schneider wrote:
> 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@google.com>
> Signed-off-by: Valentin Schneider <vschneid@redhat.com>
> ---

Acked-by: Sean Christopherson <seanjc@google.com>

Holler if you want me to grab this for 6.19.  I assume the plan is to try and
take the whole series through tip?

On 13/10/25 17:02, Sean Christopherson wrote:
> On Fri, Oct 10, 2025, Valentin Schneider wrote:
>> 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@google.com>
>> Signed-off-by: Valentin Schneider <vschneid@redhat.com>
>> ---
>
> Acked-by: Sean Christopherson <seanjc@google.com>
>
> Holler if you want me to grab this for 6.19.  I assume the plan is to try and
> take the whole series through tip?

Thanks! At the very least getting all the __ro_after_init patches in would
be good since they're standalone, I'll wait a bit to see how this goes :)