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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 EF174C282DD for ; Thu, 23 May 2019 09:06:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B70DC2184E for ; Thu, 23 May 2019 09:06:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730125AbfEWJGc (ORCPT ); Thu, 23 May 2019 05:06:32 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:40716 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726310AbfEWJGc (ORCPT ); Thu, 23 May 2019 05:06:32 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8F923341; Thu, 23 May 2019 02:06:31 -0700 (PDT) Received: from usa.arm.com (e107155-lin.cambridge.arm.com [10.1.196.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 7AC733F575; Thu, 23 May 2019 02:06:29 -0700 (PDT) From: Sudeep Holla To: x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Sudeep Holla , Catalin Marinas , Will Deacon , Oleg Nesterov , Richard Weinberger , jdike@addtoit.com, Steve Capper , Haibo Xu , Bin Lu Subject: [PATCH v4 0/4] ptrace: cleanup PTRACE_SYSEMU handling and add support for arm64 Date: Thu, 23 May 2019 10:06:14 +0100 Message-Id: <20190523090618.13410-1-sudeep.holla@arm.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, This patchset evolved from the discussion in the thread[0][1]. When we wanted to add PTRACE_SYSEMU support to ARM64, we thought instead of duplicating what other architectures like x86 and powerpc have done, let consolidate the existing support and move it to the core as there's nothing arch specific in it. v3->v4: - Rebased on v5.2-rc1 - Added Oleg's acks for generic and x86 parts v2->v3: - moved clearing of TIF_SYSCALL_EMU to __ptrace_unlink as Oleg suggested - x86 cleanup as per Oleg's suggestion and dropped adding new ptrace_syscall_enter for SYSEMU handling (tested using tools/testing/selftests/x86/ptrace_syscall.c) - Updated arm64 handling accordingly v1->v2: - added comment for empty statement after tracehook_report_syscall_entry - dropped x86 change in syscall_slow_exit_work as I had ended up changing logic unintentionally - removed spurious change in powerpc moving user_exit() Regards, Sudeep [0] https://patchwork.kernel.org/patch/10585505/ [1] https://patchwork.kernel.org/patch/10675237/ Sudeep Holla (4): ptrace: move clearing of TIF_SYSCALL_EMU flag to core x86: simplify _TIF_SYSCALL_EMU handling arm64: add PTRACE_SYSEMU{,SINGLESTEP} definations to uapi headers arm64: ptrace: add support for syscall emulation arch/arm64/include/asm/thread_info.h | 5 ++++- arch/arm64/include/uapi/asm/ptrace.h | 3 +++ arch/arm64/kernel/ptrace.c | 6 +++++- arch/powerpc/kernel/ptrace.c | 1 - arch/x86/entry/common.c | 17 ++++++----------- arch/x86/kernel/ptrace.c | 3 --- kernel/ptrace.c | 3 +++ 7 files changed, 21 insertions(+), 17 deletions(-) -- 2.17.1