lk (linux_kernel@xxxxxxxxx) wrote: > Since page size(PAGE_SIZE) on 32bit m/c is 4k, so this much max read/write > can be done in one go. > Rather on 64bit m/c it can be more than 4k as the page size is more than 4k. Hi, Correct me if I say mistakes, but on x86 (32 and/ 64 bits), it is possible to have 4K or 4M page size. I think this after reading : Intel doc on ia32 vol 3 , Chapter3 : "3.8: Mixing 4-KByte and 4-MByte Pages" Have a nice day, ~Christophe -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/