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,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 56134C433E0 for ; Sat, 18 Jul 2020 14:38:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A93B2076A for ; Sat, 18 Jul 2020 14:38:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="IBSz+fT4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727775AbgGROiq (ORCPT ); Sat, 18 Jul 2020 10:38:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726611AbgGROiq (ORCPT ); Sat, 18 Jul 2020 10:38:46 -0400 Received: from mail-io1-xd2e.google.com (mail-io1-xd2e.google.com [IPv6:2607:f8b0:4864:20::d2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E8ABC0619D2 for ; Sat, 18 Jul 2020 07:38:46 -0700 (PDT) Received: by mail-io1-xd2e.google.com with SMTP id d18so13311986ion.0 for ; Sat, 18 Jul 2020 07:38:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=3CZFF+SPnEfHSXiQgUR+BE19nE+BkkIE3L7TpE9V3uc=; b=IBSz+fT4JgoTuFrsLgZrNzfmdABix/zmUstvtGPatwiHcGKqFgx/IJEh5UGhBPpaA1 a0vySOLKu2W5b3ddxJurbxLPsQSZRwuk+DifuxtxrgsBt+vW8kLMrRt6RWHV/CEB46RE 6GvMAjxbY+DCOG0Zi82HdOL0XZtkyTKHRvhuImRMklw537iEKOGt/YsJkjuiTs7LXNh5 87reovGvbw6kf3A6uiXG/YMZ6qRuulILzB96WmxpY3IJE7cnf7qBT9L6QeOCc1TzCg+v O5tPd06EeaM2y03sgYUWR9hMwa7A7zRQF1u27pa+ulrBoP6cg7CZuZeyhKe3mLSCzYl1 zLHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=3CZFF+SPnEfHSXiQgUR+BE19nE+BkkIE3L7TpE9V3uc=; b=mEuDbTBp+kP2+AIIpkIEM3QU6WK/p8AYvYk/dBcHOIa6pNzraX/92UXDX+inpdsJYF Rv4R+RU0MUQSrhfFRG+gPbm6kZ7Q2Vogt3Jl5ngQJq9F9YRm5XNx2pqvHeJ6bJYLd1tL g79F9Ef6AR+epojV1vAGPLQi2HlmJjFzGSYLmU7RNaq6PBeFYLKMz7+aIeteabLVLwUh qHN+RzAPT/T4DE1o5DqN5E9R+G3dPfd/qLcaIMFzHonKpuXjY1S0nGOXhz0FpxBB8D8S p5T+TAJXc3vOrEII94oSdoefkH1IoS3CljO/OmzhenHk6b8GPf4dAF9Ka/OfoaDdaBer Atmg== X-Gm-Message-State: AOAM530N/yZfIz75mVsNcjsK98IYApxZtIckkoZKG78J2cECFtjMQC8f eTEtWRk1hwMUWS2yGjP22yldUc4= X-Google-Smtp-Source: ABdhPJySoFUNKeU1kzzCX2DTnsI9TY1hbtPQgWd+biWv7IxJ9a2wbtQiaoZ4rkMoYOW4Cyz3Q1i/6g== X-Received: by 2002:a02:c50d:: with SMTP id s13mr15856962jam.109.1595083125320; Sat, 18 Jul 2020 07:38:45 -0700 (PDT) Received: from localhost.localdomain (174-084-153-250.res.spectrum.com. [174.84.153.250]) by smtp.gmail.com with ESMTPSA id 5sm5888610ion.7.2020.07.18.07.38.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Jul 2020 07:38:44 -0700 (PDT) From: Brian Gerst To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , Andy Lutomirski , Brian Gerst Subject: [PATCH 0/3] x86: Clean up SYSRET/SYSEXIT validation Date: Sat, 18 Jul 2020 10:38:36 -0400 Message-Id: <20200718143839.194960-1-brgerst@gmail.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series cleans up the tests for using the SYSRET or SYSEXIT instructions on exit from a syscall, moving some code from assembly to C and merging native and compat tests. Brian Gerst (3): x86-64: Move SYSRET validation code to C x86-32: Remove SEP test for SYSEXIT x86: Clean up do_fast_syscall_32() tests arch/x86/entry/calling.h | 10 +-- arch/x86/entry/common.c | 142 ++++++++++++++++++++----------- arch/x86/entry/entry_32.S | 6 +- arch/x86/entry/entry_64.S | 71 +--------------- arch/x86/entry/entry_64_compat.S | 13 +-- arch/x86/include/asm/segment.h | 1 + arch/x86/include/asm/syscall.h | 4 +- 7 files changed, 108 insertions(+), 139 deletions(-) base-commit: bccf9048549afe54b3c6bc8979ebfddea748da85 -- 2.26.2