Re: [PATCH] x86: tighten kernel image page access rights

[Andi Kleen]

> +#ifdef CONFIG_HOTPLUG_CPU
> +	/* It must still be possible to apply SMP alternatives. */
> +	if (num_possible_cpus() <= 1)

It would be better to temporarily change the pages where the alternatives
are applied while that is done and keep it otherwise ro

-Andi
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