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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/