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=-4.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, TVD_SUBJ_WIPE_DEBT,USER_AGENT_SANE_1 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 847D5C433E2 for ; Thu, 3 Sep 2020 15:50:33 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EBF0120684 for ; Thu, 3 Sep 2020 15:50:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EBF0120684 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4Bj4yX0LpszDrBY for ; Fri, 4 Sep 2020 01:50:28 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lst.de (client-ip=213.95.11.211; helo=verein.lst.de; envelope-from=hch@lst.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=lst.de Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Bj39w2ycnzDr3p for ; Fri, 4 Sep 2020 00:30:11 +1000 (AEST) Received: by verein.lst.de (Postfix, from userid 2407) id A8FCA67357; Thu, 3 Sep 2020 16:30:04 +0200 (CEST) Date: Thu, 3 Sep 2020 16:30:03 +0200 From: Christoph Hellwig To: Al Viro Subject: Re: remove the last set_fs() in common code, and remove it for x86 and powerpc v3 Message-ID: <20200903143003.GA17260@lst.de> References: <20200903142242.925828-1-hch@lst.de> <20200903142803.GM1236603@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200903142803.GM1236603@ZenIV.linux.org.uk> User-Agent: Mutt/1.5.17 (2007-11-01) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Kees Cook , x86@kernel.org, linux-kernel@vger.kernel.org, Alexey Dobriyan , Luis Chamberlain , linux-fsdevel@vger.kernel.org, Linus Torvalds , Christoph Hellwig Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Thu, Sep 03, 2020 at 03:28:03PM +0100, Al Viro wrote: > On Thu, Sep 03, 2020 at 04:22:28PM +0200, Christoph Hellwig wrote: > > > Besides x86 and powerpc I plan to eventually convert all other > > architectures, although this will be a slow process, starting with the > > easier ones once the infrastructure is merged. The process to convert > > architectures is roughtly: > > > > (1) ensure there is no set_fs(KERNEL_DS) left in arch specific code > > (2) implement __get_kernel_nofault and __put_kernel_nofault > > (3) remove the arch specific address limitation functionality > > The one to really watch out for is sparc; I have something in that > direction, will resurrect as soon as I'm done with eventpoll analysis... > > I can live with this series; do you want that in vfs.git#for-next? Either that or a separate tree is fine with me. It would be good to eventually have a non-rebased stable tree so that other arch trees can work from it, though.