Messages in this thread | | | Date | Sun, 21 Oct 2012 14:00:04 +0200 | From | Richard Cochran <> | Subject | Re: question about context switch on arm Linux |
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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
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