x86/mm/tlb: Only send page table free TLB flush to lazy TLB CPUs

	}

}

static void mm_fill_lazy_tlb_cpu_mask(struct mm_struct *mm,

				      struct cpumask *lazy_cpus)

{

	int cpu;

	for_each_cpu(cpu, mm_cpumask(mm)) {

		if (!per_cpu(cpu_tlbstate.is_lazy, cpu))

			cpumask_set_cpu(cpu, lazy_cpus);

	}

}

void tlb_flush_remove_tables(struct mm_struct *mm)

{

	int cpu = get_cpu();

	cpumask_var_t lazy_cpus;

	if (cpumask_any_but(mm_cpumask(mm), cpu) >= nr_cpu_ids) {

		put_cpu();

		return;

	}

	if (!zalloc_cpumask_var(&lazy_cpus, GFP_ATOMIC)) {

		/*

	 * XXX: this really only needs to be called for CPUs in lazy TLB mode.

		 * If the cpumask allocation fails, do a brute force flush

		 * on all the CPUs that have this mm loaded.

		 */

	if (cpumask_any_but(mm_cpumask(mm), cpu) < nr_cpu_ids)

		smp_call_function_many(mm_cpumask(mm), tlb_flush_remove_tables_local, (void *)mm, 1);

		smp_call_function_many(mm_cpumask(mm),

				tlb_flush_remove_tables_local, (void *)mm, 1);

		put_cpu();

		return;

	}

	/*

	 * CPUs with !is_lazy either received a TLB flush IPI while the user

	 * pages in this address range were unmapped, or have context switched

	 * and reloaded %CR3 since then.

	 *

	 * Shootdown IPIs at page table freeing time only need to be sent to

	 * CPUs that may have out of date TLB contents.

	 */

	mm_fill_lazy_tlb_cpu_mask(mm, lazy_cpus);

	smp_call_function_many(lazy_cpus,

				tlb_flush_remove_tables_local, (void *)mm, 1);

	free_cpumask_var(lazy_cpus);

	put_cpu();

}