Hi... :) On Sun, Sep 2, 2012 at 2:23 AM, Ritesh Harjani <ritesh.harjani@xxxxxxxxx> wrote: > Mulyadi, > > Why it will generate a page fault later when process will tries to reference > it, while it already has mapped with the zero page? > > Hopefully I interpret it correctly that this question is for me :) Sorry, maybe I am not clear, by reference, I meant "updating " or "writing" new value. Since this zero page is mapped as read only, when writing to this zero page, page fault is triggered. Then page fault handler conclude that this is actually a write toward zero page from valid address, so it will allocate page(s). -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
