Re: [PATCH v13 6/8] x86/arch_prctl: Add ARCH_[GET|SET]_CPUID

[Thomas Gleixner]

On Sun, 27 Nov 2016, Kyle Huey wrote:
> +DEFINE_PER_CPU(u64, msr_misc_features_shadow);
> +
> +static void set_cpuid_faulting(bool on)
> +{
> +     u64 msrval;
> +
> +     DEBUG_LOCKS_WARN_ON(!irqs_disabled());

The arch_prctl code path does not have interrupts disabled and there is no
reason why it should have.

Thanks,

        tglx