From patchwork Tue Jul 20 15:09:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 12388511 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=-11.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 F0BC6C636C8 for ; Tue, 20 Jul 2021 15:10:11 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8C079610FB for ; Tue, 20 Jul 2021 15:10:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C079610FB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2BDC36B006C; Tue, 20 Jul 2021 11:10:11 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 26DF26B0070; Tue, 20 Jul 2021 11:10:11 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 10EA66B0071; Tue, 20 Jul 2021 11:10:11 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0009.hostedemail.com [216.40.44.9]) by kanga.kvack.org (Postfix) with ESMTP id DF40D6B006C for ; Tue, 20 Jul 2021 11:10:10 -0400 (EDT) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 65A321851C323 for ; Tue, 20 Jul 2021 15:10:09 +0000 (UTC) X-FDA: 78383301738.17.AF30270 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf16.hostedemail.com (Postfix) with ESMTP id EF140F00009B for ; Tue, 20 Jul 2021 15:10:08 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id C831261009; Tue, 20 Jul 2021 15:09:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626793798; bh=0ftlNhQC5zX39Pp6c6oQeEbeKpMs33orrDCC3oWnehk=; h=From:To:Cc:Subject:Date:From; b=Ujuk6myyjpUAQdS3/sLzDpjpfPv7BKz1QCj0sf8kmzBRK+6ORPzNmIo2tH9FH5ZUg dqqY+vi2LY0wm6lVmCuQqyQUKAns8Q6ucdNyMCarp1ksm1DA+I/NNkTu381i5YvgIa ONkNKWgXkrCVbeh376Uy+6h8151Iy9iWMxcXlyG+WixGnJVexCVwrSvzPsCKVAsDY0 BTUi29CNxb8NkTNCc1r6GwAG7cuslfUf/Lpb/OAYAywz4Hl3kcleo8bclZpyQ25AWn N9pZAylKCNCK8tM6fjRtxA8iMrmnybJGuSEvL6YJBeovNW3+H86JSHiEzRORIR45EQ 29lvm8+jOTRJA== From: Arnd Bergmann To: linux-arch@vger.kernel.org Cc: Arnd Bergmann , Christoph Hellwig , Alexander Viro , Andrew Morton , Borislav Petkov , Brian Gerst , Eric Biederman , Ingo Molnar , "H. Peter Anvin" , Thomas Gleixner , Linux ARM , linux-kernel@vger.kernel.org, Linux-MM , kexec@lists.infradead.org Subject: [PATCH v4 0/4] compat: remove compat_alloc_user_space callers Date: Tue, 20 Jul 2021 17:09:46 +0200 Message-Id: <20210720150950.3669610-1-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Ujuk6myy; spf=pass (imf16.hostedemail.com: domain of arnd@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=arnd@kernel.org; dmarc=pass (policy=none) header.from=kernel.org X-Rspamd-Server: rspam02 X-Stat-Signature: 5bqsdzoes6q8jnhtrzpgy5efjqry33i7 X-Rspamd-Queue-Id: EF140F00009B X-HE-Tag: 1626793808-982904 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: 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. The drivers/media portion of the longer series is already merged, and I just resubmitted the net/core and drivers/net portions, so this is the last main bit. Arnd --- Changes in v4: - Rebase to v5.14-rc2 - Replace the kexec patch with a version based on Eric Biederman's prototype 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 (4): kexec: avoid compat_alloc_user_space mm: simplify compat_sys_move_pages mm: simplify compat numa syscalls compat: remove some compat entry points arch/arm64/include/asm/unistd32.h | 10 +- arch/mips/kernel/syscalls/syscall_n32.tbl | 10 +- arch/mips/kernel/syscalls/syscall_o32.tbl | 10 +- arch/parisc/kernel/syscalls/syscall.tbl | 8 +- arch/powerpc/kernel/syscalls/syscall.tbl | 10 +- arch/s390/kernel/syscalls/syscall.tbl | 10 +- arch/sparc/kernel/syscalls/syscall.tbl | 10 +- arch/x86/entry/syscalls/syscall_32.tbl | 4 +- arch/x86/entry/syscalls/syscall_64.tbl | 2 +- include/linux/compat.h | 37 +--- include/uapi/asm-generic/unistd.h | 10 +- kernel/kexec.c | 116 ++++++------- kernel/sys_ni.c | 5 - mm/mempolicy.c | 196 +++++----------------- mm/migrate.c | 50 +++--- 15 files changed, 182 insertions(+), 306 deletions(-)