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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 674DAC433EF for ; Wed, 16 Feb 2022 13:07:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id F1B0B6B0074; Wed, 16 Feb 2022 08:07:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id EA4466B0078; Wed, 16 Feb 2022 08:07:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D46906B007B; Wed, 16 Feb 2022 08:07:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0146.hostedemail.com [216.40.44.146]) by kanga.kvack.org (Postfix) with ESMTP id C57A56B0074 for ; Wed, 16 Feb 2022 08:07:20 -0500 (EST) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 8C433181AC9C6 for ; Wed, 16 Feb 2022 13:07:20 +0000 (UTC) X-FDA: 79148669040.29.ADB71F3 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf06.hostedemail.com (Postfix) with ESMTP id D77C818000C for ; Wed, 16 Feb 2022 13:07:19 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2907C61693 for ; Wed, 16 Feb 2022 13:07:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC2E0C36AEB for ; Wed, 16 Feb 2022 13:07:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645016838; bh=1AijW/WQHr1DB1sxEAf5u6qv337FtGM78rBteqtJsFc=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=iN729W8eTzLUmDGyJvEI0HE0OkfEC9ALEUXFXgdGhQXPvSwBAbGx4Bm4JUzW2PC8s BUMcbAlGBg1oLv2VeML280237jVmEo5gaC6UDs56p3vjvFXfFS/uKYdSKjDuePRk1L ktHY4DZBfIfbMM+DZtBJsD1tLcjqddiWlefZ3tjDhL0ZaU2r/dIUVsti11RXTBoqeV Fv+44VNG8OJe97by5ltQ4+nZVecfzeBcTyXFP1Nn1XVJH9wwXssVksGeqND4hscY9C RdLVWj/y1SlCH/eoBwY9xia343UtnPrsFJT6xH3Aw2TalwP1wcgKbcKqShewHfbFGA MgV75zhrtRvrQ== Received: by mail-wm1-f46.google.com with SMTP id n8so1156532wms.3 for ; Wed, 16 Feb 2022 05:07:18 -0800 (PST) X-Gm-Message-State: AOAM530mPsPm6lZzqp2uh/nzjl9Z2o+siWwi89/2/VCggcKcO1oczaSI Kefwg+c1/bq5fid+8b17MGwbLhAv0W/mhIZII50= X-Google-Smtp-Source: ABdhPJwloTGuyJt/Hdm31OFklwbHVE+n23OzkTYnWy+HDNvimUM0g1FM9pYMdMLaGtlr03PBtziLgSkYqMH3Naa88b4= X-Received: by 2002:a05:600c:1d27:b0:37c:74bb:2b4d with SMTP id l39-20020a05600c1d2700b0037c74bb2b4dmr1594630wms.82.1645016837028; Wed, 16 Feb 2022 05:07:17 -0800 (PST) MIME-Version: 1.0 References: <20220214163452.1568807-1-arnd@kernel.org> <20220214163452.1568807-12-arnd@kernel.org> In-Reply-To: From: Arnd Bergmann Date: Wed, 16 Feb 2022 14:07:00 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 11/14] sparc64: remove CONFIG_SET_FS support To: Al Viro Cc: Linus Torvalds , Christoph Hellwig , linux-arch , Linux-MM , Linux API , Arnd Bergmann , Linux Kernel Mailing List , Russell King - ARM Linux , Will Deacon , Guo Ren , Brian Cain , Geert Uytterhoeven , Michal Simek , Thomas Bogendoerfer , Nick Hu , Greentime Hu , Dinh Nguyen , Stafford Horne , Helge Deller , Michael Ellerman , Peter Zijlstra , Ingo Molnar , Mark Rutland , Heiko Carstens , Rich Felker , David Miller , Richard Weinberger , "the arch/x86 maintainers" , Max Filippov , "Eric W . Biederman" , Andrew Morton , Ard Biesheuvel , alpha , "open list:SYNOPSYS ARC ARCHITECTURE" , Linux ARM , linux-csky@vger.kernel.org, "open list:QUALCOMM HEXAGON..." , linux-ia64@vger.kernel.org, linux-m68k , "open list:BROADCOM NVRAM DRIVER" , Openrisc , Parisc List , linuxppc-dev , linux-riscv , linux-s390 , Linux-sh list , sparclinux , linux-um , "open list:TENSILICA XTENSA PORT (xtensa)" Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: D77C818000C X-Stat-Signature: r4pppbgn9ffmspsbnjp9oz386xnff4kk X-Rspam-User: Authentication-Results: imf06.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=iN729W8e; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf06.hostedemail.com: domain of arnd@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=arnd@kernel.org X-HE-Tag: 1645016839-41947 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Feb 15, 2022 at 1:48 AM Al Viro wrote: > > On Mon, Feb 14, 2022 at 05:34:49PM +0100, Arnd Bergmann wrote: > > > -/* > > - * Sparc64 is segmented, though more like the M68K than the I386. > > - * We use the secondary ASI to address user memory, which references a > > - * completely different VM map, thus there is zero chance of the user > > - * doing something queer and tricking us into poking kernel memory. > > Actually, this part of comment probably ought to stay - it is relevant > for understanding what's going on (e.g. why is access_ok() always true, etc.) Ok, I've put it back now. Arnd