lkml.org 
[lkml]   [2012]   [Oct]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: question about context switch on arm Linux
On Sun, Oct 21, 2012 at 04:19:50PM +0800, caiyuqing wrote:
> Richard, thanks for your reply.
> mainline Linux doesn't support FCSE, if so, when kernel switch a
> process to another(these two process share the same virtual memory
> space), that means the vitrual-to-physical address should be
> remaped, TLB shuold be invalid, CACHE should be flushed, right?

Yes, and that is why you can measure quite a long context switching
time when running Linux on ARMv4/5.

Thanks,
Richard


\
 
 \ /
  Last update: 2012-10-21 14:41    [W:0.028 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site