> +int cpu_has_pvr(void)
> +{
> + unsigned flags;
> + unsigned pvr0;
> + int ret = 0;
> +
> + local_irq_save(flags);
> +
...
> +out:
> + local_irq_restore(flags);
> + return ret;
> +}
The actual IRQ clear/restore is not required - can you just use
local_save_flags() or similar to read the MSR?
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