From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 9 May 2003 21:44:28 -0400 (EDT) From: Rik van Riel Subject: Re: Extended Pagins on IA32 In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Oliver Tennert Cc: linux-mm@kvack.org List-ID: On Fri, 9 May 2003, Oliver Tennert wrote: > Does Linux make use of 4M page sizes (or 2M if PAE is enabled)? If yes, > under which circumstances are large pages used? In 2.4 mainline the large pages are only used for the kernel itself, for mapping ZONE_DMA and ZONE_NORMAL memory into the kernel virtual address space. In 2.5 (and some 2.4 distro kernels) large pages can also be used for special purpose things in userland, mostly Oracle shared memory segments. regards, Rik -- Engineers don't grow up, they grow sideways. http://www.surriel.com/ http://kernelnewbies.org/ -- 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: aart@kvack.org