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SubjectRe: [PATCH 2/2] s390/mm: use ipte range to invalidate multiple page table entries
Date
> 
> +void ptep_invalidate_range(struct mm_struct *mm, unsigned long start,
> + unsigned long end, pte_t *ptep)
> +{
> + unsigned long nr;
> +
> + if (!MACHINE_HAS_IPTE_RANGE || mm_has_pgste(mm))
> + return;
> + preempt_disable();
> + nr = (end - start) >> PAGE_SHIFT;
> + /* If the flush is likely to be local skip the ipte range */
> + if (nr && !cpumask_equal(mm_cpumask(mm),
> + cpumask_of(smp_processor_id())))

s/smp/raw_smp/ to avoid adding schedule entry with page table
lock held?

> + __ptep_ipte_range(start, nr - 1, ptep);
> + preempt_enable();
> +}
> +EXPORT_SYMBOL(ptep_invalidate_range);
> +

thanks
Hillf

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