[PATCH v3 3/8] x86, lib: Add WBNOINVD helper functions

[Borislav Petkov]

On Thu, May 22, 2025 at 04:37:27PM -0700, Sean Christopherson wrote:
> diff --git a/arch/x86/lib/cache-smp.c b/arch/x86/lib/cache-smp.c
> index 079c3f3cd32c..1789db5d8825 100644
> --- a/arch/x86/lib/cache-smp.c
> +++ b/arch/x86/lib/cache-smp.c
> @@ -19,3 +19,14 @@ void wbinvd_on_all_cpus(void)
>  	on_each_cpu(__wbinvd, NULL, 1);
>  }
>  EXPORT_SYMBOL(wbinvd_on_all_cpus);
> +
> +static void __wbnoinvd(void *dummy)
> +{
> +	wbnoinvd();
> +}
> +
> +void wbnoinvd_on_all_cpus(void)
> +{
> +	on_each_cpu(__wbnoinvd, NULL, 1);
> +}
> +EXPORT_SYMBOL(wbnoinvd_on_all_cpus);

If there's no particular reason for the non-GPL export besides being
consistent with the rest - yes, I did the change for wbinvd_on_all_cpus() but
that was loooong time ago - I'd simply make this export _GPL.

Thx.

-- 
Regards/Gruss,
    Boris.

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