static void __rwmsr_on_cpus(const struct cpumask *mask, u32 msr_no,
			    struct msr *msrs,
			    void (*msr_func) (void *info))
static void __rwmsr_on_cpus(const struct cpumask *mask, u32 msr_no,
			    struct msr __percpu *msrs,
			    void (*msr_func) (void *info))