From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3DB5A2E6.6000305@redhat.com> Date: Tue, 22 Oct 2002 12:11:34 -0700 From: Ulrich Drepper MIME-Version: 1.0 Subject: Re: [PATCH 2.5.43-mm2] New shared page table patch References: <145460000.1035311809@baldur.austin.ibm.com> In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Dave McCracken Cc: Rik van Riel , Andrew Morton , "Eric W. Biederman" , "Martin J. Bligh" , Bill Davidsen , Linux Kernel , Linux Memory Management List-ID: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dave McCracken wrote: > 3) The current large page implementation is only for applications > that want anonymous *non-pageable* shared memory. Shared page > tables reduce resource usage for any shared area that's mapped > at a common address and is large enough to span entire pte pages. Does this happen automatically (i.e., without modifying th emmap call)? In any case, a system using prelinking will likely have all users of a DSO mapping the DSO at the same address. Will a system benefit in this case? If not directly, perhaps with some help from ld.so since we do know when we expect the same is used everywhere. - -- - --------------. ,-. 444 Castro Street Ulrich Drepper \ ,-----------------' \ Mountain View, CA 94041 USA Red Hat `--' drepper at redhat.com `--------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE9taLn2ijCOnn/RHQRAgJ6AJ9AzHCX3NrpZPpGUF9XIQYPdX2NPQCgw7BP 6fIfDzEvsxbGvVtoUX76aAw= =LKpP -----END PGP SIGNATURE----- -- 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/