Since you asked this question by phone, we search your email address and found your questions here. On 06/20/2013 06:01 PM, Fan Yang wrote: > Hi Baoquan: > Thank you for your answer. > That is to say the designer use __USER_DS here deliberately to improve the > efficiency jump from kernel space to user space? > BTW,how can you find this email? I write this email On 10/24/2012. > > > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
