From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <46E58A4A.9080605@cray.com> Date: Mon, 10 Sep 2007 13:17:46 -0500 From: Andrew Hastings MIME-Version: 1.0 Subject: Re: [ofa-general] [PATCH][RFC]: pte notifiers -- support for external page tables References: <11890103283456-git-send-email-avi@qumranet.com> <20070906062441.GF3410@minantech.com> <46DFBBCC.8060307@qumranet.com> In-Reply-To: <46DFBBCC.8060307@qumranet.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Avi Kivity Cc: Daniel Blueman , linux-mm@kvack.org List-ID: Avi Kivity wrote: > Gleb Natapov wrote: >> On Wed, Sep 05, 2007 at 07:38:48PM +0300, Avi Kivity wrote: >> >>> This sample patch adds a new mechanism, pte notifiers, that allows >>> drivers >>> to register an interest in a changes to ptes. Whenever Linux changes a >>> pte, it will call a notifier to allow the driver to adjust the external >>> page table and flush its tlb. >>> >> How is this different from http://lwn.net/Articles/133627/? AFAIR the >> patch was rejected because there was only one user for it and it was >> decided that it would be better to maintain it out of tree for a while. >> > > Your patch is more complete. > > There are now at least three users: you, kvm, and newer Infiniband > HCAs. Care to resurrect the patch? We (Cray) also use the ioproc patch. AFAIK the current maintainer is Dan Blueman at Quadrics. -Andrew Hastings Cray Inc. -- 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