From patchwork Tue Jul 27 14:48:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 12403015 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=-14.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 63574C43216 for ; Tue, 27 Jul 2021 14:50:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4553561AF7 for ; Tue, 27 Jul 2021 14:50:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237159AbhG0Ouz (ORCPT ); Tue, 27 Jul 2021 10:50:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:35944 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236864AbhG0Ott (ORCPT ); Tue, 27 Jul 2021 10:49:49 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3559861AFD; Tue, 27 Jul 2021 14:49:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1627397359; bh=Tjiwf4/hYWXFn9aUgPpl3D0HHZbelU5u+FTy8tvX/BA=; h=From:To:Cc:Subject:Date:From; b=Jm0Ghr4DY8S8DbJUMOgzNYNZ9TpUDawl2m4udsOCvZu6uErY0ceZK1ugOzDu5GYfU FcpYwKuxA6AjAy3zyCgVACtAq/UWFPG3mNHsh8tFDA5zWzInxHIu8o0jJfWh5vuzLj ++JkgaoWIL8JM41Ld9ZSmOyhjlGS5DRNjCGi0qceKIOC/UT+DuY98htxeqdY7x3FKV 40uaxkb5SA6kv5iFRlvbFCA5wazm8JgMVhL91/E5GnpKc2GEeZREYLyo0ppxHTqLHX HXWc8AwqP3FWNXks7HkSQo4WKwHmUdrLF/lKZgKuXzZvtIgXac3yNPJy/etARITDNG 3IhheeU5vs0Kw== From: Arnd Bergmann To: Andrew Morton Cc: Arnd Bergmann , Catalin Marinas , Will Deacon , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , "David S. Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Al Viro , "Eric W. Biederman" , Christoph Hellwig , Feng Tang , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v5 0/6] compat: remove compat_alloc_user_space Date: Tue, 27 Jul 2021 16:48:53 +0200 Message-Id: <20210727144859.4150043-1-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Arnd Bergmann Going through compat_alloc_user_space() to convert indirect system call arguments tends to add complexity compared to handling the native and compat logic in the same code. Out of the other remaining callers, the linux-media series went into v5.14, and the network ioctl handling is now fixed in net-next, so these are the last remaining users, and I now include the final patch to remove the definitions as well. Since these patches are now all that remains, it would be nice to merge it all through Andrew's Linux-mm tree, which is already based on top of linux-next. Arnd --- Changes in v4: - Rebase on top of net-next - Split up and improve the kexec patch based on Christoph's suggestions - Include final patch to remove compat_alloc_user_space - Cc compat architecture maintainers Link: https://lore.kernel.org/lkml/20210720150950.3669610-1-arnd@kernel.org/ Changes in v3: - fix whitespace as pointed out by Christoph Hellwig - minor build fixes - rebase to v5.13-rc1 Link: https://lore.kernel.org/lkml/20210517203343.3941777-1-arnd@kernel.org/ Changes in v2: - address review comments from Christoph Hellwig - split syscall removal into a separate patch - replace __X32_COND_SYSCALL() with individual macros for x32 Link: https://lore.kernel.org/lkml/20201208150614.GA15765@infradead.org/ Arnd Bergmann (6): kexec: move locking into do_kexec_load kexec: avoid compat_alloc_user_space mm: simplify compat_sys_move_pages mm: simplify compat numa syscalls compat: remove some compat entry points arch: remove compat_alloc_user_space arch/arm64/include/asm/compat.h | 5 - arch/arm64/include/asm/uaccess.h | 11 -- arch/arm64/include/asm/unistd32.h | 10 +- arch/arm64/lib/Makefile | 2 +- arch/arm64/lib/copy_in_user.S | 77 --------- arch/mips/cavium-octeon/octeon-memcpy.S | 2 - arch/mips/include/asm/compat.h | 8 - arch/mips/include/asm/uaccess.h | 26 --- arch/mips/kernel/syscalls/syscall_n32.tbl | 10 +- arch/mips/kernel/syscalls/syscall_o32.tbl | 10 +- arch/mips/lib/memcpy.S | 11 -- arch/parisc/include/asm/compat.h | 6 - arch/parisc/include/asm/uaccess.h | 2 - arch/parisc/kernel/syscalls/syscall.tbl | 8 +- arch/parisc/lib/memcpy.c | 9 - arch/powerpc/include/asm/compat.h | 16 -- arch/powerpc/kernel/syscalls/syscall.tbl | 10 +- arch/s390/include/asm/compat.h | 10 -- arch/s390/include/asm/uaccess.h | 3 - arch/s390/kernel/syscalls/syscall.tbl | 10 +- arch/s390/lib/uaccess.c | 63 ------- arch/sparc/include/asm/compat.h | 19 --- arch/sparc/kernel/process_64.c | 2 +- arch/sparc/kernel/signal32.c | 12 +- arch/sparc/kernel/signal_64.c | 8 +- arch/sparc/kernel/syscalls/syscall.tbl | 10 +- arch/x86/entry/syscalls/syscall_32.tbl | 4 +- arch/x86/entry/syscalls/syscall_64.tbl | 2 +- arch/x86/include/asm/compat.h | 13 -- arch/x86/include/asm/uaccess_64.h | 7 - include/linux/compat.h | 39 +---- include/linux/uaccess.h | 10 -- include/uapi/asm-generic/unistd.h | 10 +- kernel/compat.c | 21 --- kernel/kexec.c | 103 +++++------- kernel/sys_ni.c | 5 - mm/mempolicy.c | 196 +++++----------------- mm/migrate.c | 50 +++--- 38 files changed, 175 insertions(+), 645 deletions(-) delete mode 100644 arch/arm64/lib/copy_in_user.S