From patchwork Tue Apr 30 17:05:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 163137 Delivered-To: patch@linaro.org Received: by 2002:a92:7e86:0:0:0:0:0 with SMTP id q6csp3487085ill; Tue, 30 Apr 2019 10:05:32 -0700 (PDT) X-Google-Smtp-Source: APXvYqxt1OgrcSFndQIRwTUafdwc9FEgIHtkGy28cWeklPZUehup0q3WFe9PYMZQqaB4gSBrB/As X-Received: by 2002:a17:902:50ec:: with SMTP id c41mr175637plj.244.1556643932570; Tue, 30 Apr 2019 10:05:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1556643932; cv=none; d=google.com; s=arc-20160816; b=Me7CMghtE8MpsNnnpWyNnt1kBQf2Q+WqGGBKntaipfODr+VmAzKziOwgCrmU3gcWdR fJYqAYwWNzXEZv8xOPnVSHTeMUhYZ5kX8wFN0QH0sMMYGWcDJQ3EVB2m0FgOFn6FsYal FB1YNyxPegNOzueFfOZDdIDfdZ2FUljborMZUTzCZfgY4ZW6X5u7buGpVbbE8nqExexJ laIs03nxUsZ1mEhvw4e/G20BEXaNv6BfAkpcUliSfRePJhdtiTWsNll1S1jC8zyAhS50 KI94FLdTRiNIhZdO7KgIwfIi7KgxkCAT5oP/jU6Rr1i5xOkTnRjAMPitEfDzUOaKTlJD g1Iw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:subject:cc:to:from; bh=SrtZWLcKy+Dku4FETVOwZE6dil+jKwU8vXx7SluXB2Q=; b=iLL86dGWPR4IhKAC2X9/QUC0SJRJlqt/K9ND5xsLtJNDfz9p4LLeaSSMwKzmen+uLr bUL4aeXLVYS94OXvJPx2XoCuijaMHJtkMLHHAGSJE4E/TmmnVET2DZzvtreY3Z3BzK/q DyBvvaDW9hSoDVi2J7xyPw8c1JJkA2r/4WA0NFRS5yM22uNzeQFm+VS33LdaWI/Ni8TI IOK3eozczN6KMj95yWXsmBjkljgCxmBzIgtPKSLt53Ax/YxPc6hJlnp86T2uCAk9fitL yKK10Sb0EENma6KyOHcE5eQRHfT7aFLNtbJmkokkw3F+x2gyQokcP63snj+rBPczT/gS kFMQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id t61si996955plb.93.2019.04.30.10.05.31; Tue, 30 Apr 2019 10:05:32 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726599AbfD3RF3 (ORCPT + 30 others); Tue, 30 Apr 2019 13:05:29 -0400 Received: from foss.arm.com ([217.140.101.70]:50392 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725930AbfD3RF3 (ORCPT ); Tue, 30 Apr 2019 13:05:29 -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 D4319374; Tue, 30 Apr 2019 10:05:28 -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 8655C3F5C1; Tue, 30 Apr 2019 10:05:26 -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 , Andy Lutomirski Subject: [PATCH v3 0/4] ptrace: cleanup PTRACE_SYSEMU handling and add support for arm64 Date: Tue, 30 Apr 2019 18:05:16 +0100 Message-Id: <20190430170520.29470-1-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. 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