lkml.org 
[lkml]   [2016]   [Jul]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
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

\
 
 \ /
  Last update: 2016-07-06 06:41    [W:0.035 / U:7.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site