lkml.org 
[lkml]   [2019]   [Aug]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/3] csky: Fixup arch_get_unmapped_area() implementation
> +/*
> + * We need to ensure that shared mappings are correctly aligned to
> + * avoid aliasing issues with VIPT caches. We need to ensure that
> + * a specific page of an object is always mapped at a multiple of
> + * SHMLBA bytes.
> + *
> + * We unconditionally provide this function for all cases.
> + */

On something unrelated: If csky has virtually indexed caches you also
need to implement the flush_kernel_vmap_range and
invalidate_kernel_vmap_range functions to avoid data corruption when
doing I/O on vmalloc/vmap ranges.

\
 
 \ /
  Last update: 2019-08-21 04:17    [W:0.058 / U:4.468 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site