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=-7.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 88E83C388F2 for ; Mon, 2 Nov 2020 12:32:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 485DD2227F for ; Mon, 2 Nov 2020 12:32:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604320337; bh=lLXuGY/nGSqNrbsjk3YhWViLi2X0XYWjraAqnjfRDAc=; h=From:To:Cc:Subject:Date:List-ID:From; b=r/YLO0tdZeJTtZvLALJKsMnAwx3A3fxCx9ElFArQYT64wR0XE0kTUFtJyQiYCJy5C woTpSrnV/iajpAxhjSRMyFD8YnE22JKhLIS0oKSvzU/pnIYm0JpyOtroIssk35IiNB QR3a4LzN6RYnVo48f1s11hefUIIMUNlujqOSwVfg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728704AbgKBMcP (ORCPT ); Mon, 2 Nov 2020 07:32:15 -0500 Received: from mail.kernel.org ([198.145.29.99]:43388 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728359AbgKBMcO (ORCPT ); Mon, 2 Nov 2020 07:32:14 -0500 Received: from localhost.localdomain (unknown [192.30.34.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8D84E2076E; Mon, 2 Nov 2020 12:32:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604320333; bh=lLXuGY/nGSqNrbsjk3YhWViLi2X0XYWjraAqnjfRDAc=; h=From:To:Cc:Subject:Date:From; b=xj2CopuKaGXkMg2sipuEiU3iuJEEmdGxEzbxBvMQkkUEUqrhHMqAJsqqYBYeKHrTy mAt1qNFbZPz26kGNMcz5w22t0LIY5Gt08nabXpweNBi/9lwYBznFti6g1OtqxRclH8 GJc5vaCul4npegEcPz3/CW6YydqTd5i0rSUacZJk= From: Arnd Bergmann To: linux-arch@vger.kernel.org Cc: Arnd Bergmann , Alexander Viro , Andrew Morton , Andy Lutomirski , Borislav Petkov , Brian Gerst , Christoph Hellwig , Eric Biederman , Ingo Molnar , "H . Peter Anvin" , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kexec@lists.infradead.org Subject: [PATCH v2 0/4] syscalls: remove compat_alloc_user_space callers Date: Mon, 2 Nov 2020 13:31:47 +0100 Message-Id: <20201102123151.2860165-1-arnd@kernel.org> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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. I have patches for all other uses of compat_alloc_user_space() as well, and would expect that we can subsequently remove the interface itself. 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 Arnd Bergmann (4): kexec: simplify compat_sys_kexec_load mm: simplify compat_sys_move_pages mm: simplify compat numa syscalls compat: remove some compat entry points arch/arm64/include/asm/unistd32.h | 12 +- arch/mips/kernel/syscalls/syscall_n32.tbl | 12 +- arch/mips/kernel/syscalls/syscall_o32.tbl | 12 +- arch/parisc/kernel/syscalls/syscall.tbl | 10 +- arch/powerpc/kernel/syscalls/syscall.tbl | 12 +- arch/s390/kernel/syscalls/syscall.tbl | 12 +- arch/sparc/kernel/syscalls/syscall.tbl | 12 +- arch/x86/entry/syscall_x32.c | 2 + arch/x86/entry/syscalls/syscall_32.tbl | 6 +- arch/x86/entry/syscalls/syscall_64.tbl | 4 +- include/linux/compat.h | 26 --- include/linux/kexec.h | 2 - include/uapi/asm-generic/unistd.h | 12 +- kernel/kexec.c | 90 ++++------ kernel/sys_ni.c | 5 - mm/mempolicy.c | 195 +++++----------------- mm/migrate.c | 50 +++--- 17 files changed, 155 insertions(+), 319 deletions(-) Cc: Alexander Viro Cc: Andrew Morton Cc: Andy Lutomirski Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Brian Gerst Cc: Christoph Hellwig Cc: Eric Biederman Cc: Ingo Molnar Cc: "H . Peter Anvin" Cc: Thomas Gleixner Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org Cc: kexec@lists.infradead.org -- 2.27.0