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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B7504C433F5 for ; Wed, 16 Feb 2022 19:51:51 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4JzT9x4VhSz3cTG for ; Thu, 17 Feb 2022 06:51:49 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=ravnborg.org (client-ip=91.221.196.228; helo=mx2.smtp.larsendata.com; envelope-from=sam@ravnborg.org; receiver=) Received: from mx2.smtp.larsendata.com (mx2.smtp.larsendata.com [91.221.196.228]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4JzT9T1gCBz2yMy for ; Thu, 17 Feb 2022 06:51:22 +1100 (AEDT) Received: from mail01.mxhotel.dk (mail01.mxhotel.dk [91.221.196.236]) by mx2.smtp.larsendata.com (Halon) with ESMTPS id 36dbd7e5-8f57-11ec-b2df-0050568cd888; Wed, 16 Feb 2022 18:35:28 +0000 (UTC) Received: from ravnborg.org (80-162-45-141-cable.dk.customer.tdc.net [80.162.45.141]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: sam@ravnborg.org) by mail01.mxhotel.dk (Postfix) with ESMTPSA id 10F5F194B3E; Wed, 16 Feb 2022 19:35:03 +0100 (CET) Date: Wed, 16 Feb 2022 19:34:59 +0100 X-Report-Abuse-To: abuse@mxhotel.dk From: Sam Ravnborg To: Arnd Bergmann Subject: Re: [PATCH v2 15/18] sparc64: remove CONFIG_SET_FS support Message-ID: References: <20220216131332.1489939-1-arnd@kernel.org> <20220216131332.1489939-16-arnd@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220216131332.1489939-16-arnd@kernel.org> 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: mark.rutland@arm.com, dalias@libc.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, peterz@infradead.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, guoren@kernel.org, sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, will@kernel.org, Christoph Hellwig , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, bcain@codeaurora.org, deller@gmx.de, x86@kernel.org, linux@armlinux.org.uk, linux-csky@vger.kernel.org, ardb@kernel.org, mingo@redhat.com, geert@linux-m68k.org, linux-snps-arc@lists.infradead.org, linux-xtensa@linux-xtensa.org, arnd@arndb.de, hca@linux.ibm.com, linux-alpha@vger.kernel.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-m68k@lists.linux-m68k.org, openrisc@lists.librecores.org, viro@zeniv.linux.org.uk, shorne@gmail.com, monstr@monstr.eu, tsbogend@alpha.franken.de, linux-parisc@vger.kernel.org, nickhu@andestech.com, jcmvbkbc@gmail.com, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, dinguyen@kernel.org, ebiederm@xmission.com, richard@nod.at, akpm@linux-foundation.org, Linus Torvalds , davem@davemloft.net, green.hu@gmail.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Hi Arnd. On Wed, Feb 16, 2022 at 02:13:29PM +0100, Arnd Bergmann wrote: > From: Arnd Bergmann > > sparc64 uses address space identifiers to differentiate between kernel > and user space, using ASI_P for kernel threads but ASI_AIUS for normal > user space, with the option of changing between them. > > As nothing really changes the ASI any more, just hardcode ASI_AIUS > everywhere. Kernel threads are not allowed to access __user pointers > anyway. > > Signed-off-by: Arnd Bergmann > --- > arch/sparc/include/asm/processor_64.h | 4 ---- > arch/sparc/include/asm/switch_to_64.h | 4 +--- > arch/sparc/include/asm/thread_info_64.h | 4 +--- > arch/sparc/include/asm/uaccess_64.h | 20 +------------------- > arch/sparc/kernel/process_64.c | 12 ------------ > arch/sparc/kernel/traps_64.c | 2 -- > arch/sparc/lib/NGmemcpy.S | 3 +-- > arch/sparc/mm/init_64.c | 7 ++++--- > 8 files changed, 8 insertions(+), 48 deletions(-) I think you somehow missed the Kconfig change, and also the related sparc32 change which continue to have set_fs() after this patch. I did not manage to review the patch - as I am too unfamiliar with the code paths and the set_fs() removal changes. Sam