From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92D9AC433E0 for ; Tue, 9 Feb 2021 08:15:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61EA264EC2 for ; Tue, 9 Feb 2021 08:15:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229736AbhBIIO4 (ORCPT ); Tue, 9 Feb 2021 03:14:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229464AbhBIIOx (ORCPT ); Tue, 9 Feb 2021 03:14:53 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A8DBC061786; Tue, 9 Feb 2021 00:14:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=3ClKmTCZkiXhw+XhaM4rukL0gkFL3K11MqTaTKHhTuc=; b=mx7ydtFKmO+9z1LAS9vJQANpNf knVyCftAq3dKUql2YXClzEstVG62Cu6nCWXCcNosYeWkOclQfc9CWxtJdGIcOtipx5yqzhXda5BDt aHbKbhiSZgHtUwhrx0hUA2KqTocRrPcAwqoGlCgsnIkezlRol4QH3etNP44K8CkNnekKCu2nSufeO E6lERBpj+6WlS10mswMQWBquwP69QoLwCJu/ltkNdXiEG8E2WGBaOuR1XdZjItQxtiFn6L3nGYEiw lTj3vsrSWA27hTPQnZOfbwXnDqPp2BqTt3Oh5ToNp+n8806P7eG0p4Y2PusjE4sdqBeNleGaA9+G/ vbjnN4Yw==; Received: from hch by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1l9O9w-0079GD-15; Tue, 09 Feb 2021 08:14:08 +0000 Date: Tue, 9 Feb 2021 08:14:08 +0000 From: Christoph Hellwig To: Paolo Bonzini Cc: Christoph Hellwig , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, jgg@ziepe.ca, linux-mm@kvack.org, Andrew Morton , dan.j.williams@intel.com, Daniel Vetter Subject: Re: [PATCH 1/2] mm: provide a sane PTE walking API for modules Message-ID: <20210209081408.GA1703597@infradead.org> References: <20210205103259.42866-1-pbonzini@redhat.com> <20210205103259.42866-2-pbonzini@redhat.com> <20210208173936.GA1496438@infradead.org> <3b10057c-e117-89fa-1bd4-23fb5a4efb5f@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3b10057c-e117-89fa-1bd4-23fb5a4efb5f@redhat.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 08, 2021 at 07:18:56PM +0100, Paolo Bonzini wrote: > Fair enough. I would expect that pretty much everyone using follow_pfn will > at least want to switch to this one (as it's less bad and not impossible to > use correctly), but I'll squash this in: Daniel looked into them, so he may correct me, but the other follow_pfn users and their destiny are: - SGX, which is not modular and I think I just saw a patch to kill them - v4l videobuf and frame vector: I think those are going away entirely as they implement a rather broken pre-dmabuf P2P scheme - vfio: should use MMU notifiers eventually Daniel, what happened to your follow_pfn series?