From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by fk-out-0910.google.com with SMTP id z22so1200986fkz.6 for ; Sun, 29 Jun 2008 18:37:34 -0700 (PDT) Message-ID: <21d7e9970806291837y39221513i8537fe361f23eeeb@mail.gmail.com> Date: Mon, 30 Jun 2008 11:37:34 +1000 From: "Dave Airlie" Subject: removing pages from the kernel mappings completely.... MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: owner-linux-mm@kvack.org Return-Path: To: Linux Memory Management List-ID: Another thing we are contemplating to avoid having to do a lot of changes to kernel mappings to move pages from cached to uncached mappings, is to use highmem pages where we can, but also remove a set of pages from the kernel page mappings if we didn't have any highmem. This would allow us to remove those pages when we bring pages into a pool, and then we can control the userspace and kernel maps of these pages for cached/uncached uses from that point on, without having to go through a page remapping for the kernel pages every time. Dave. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org