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=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 D38B4C43381 for ; Thu, 14 Mar 2019 19:03:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A87C2218A2 for ; Thu, 14 Mar 2019 19:03:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=efficios.com header.i=@efficios.com header.b="mIUMk6wt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727608AbfCNTD5 (ORCPT ); Thu, 14 Mar 2019 15:03:57 -0400 Received: from mail.efficios.com ([167.114.142.138]:49844 "EHLO mail.efficios.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726848AbfCNTD5 (ORCPT ); Thu, 14 Mar 2019 15:03:57 -0400 Received: from localhost (ip6-localhost [IPv6:::1]) by mail.efficios.com (Postfix) with ESMTP id AA1A41C3A23; Thu, 14 Mar 2019 15:03:55 -0400 (EDT) Received: from mail.efficios.com ([IPv6:::1]) by localhost (mail02.efficios.com [IPv6:::1]) (amavisd-new, port 10032) with ESMTP id CzaDl6CrjRQd; Thu, 14 Mar 2019 15:03:55 -0400 (EDT) Received: from localhost (ip6-localhost [IPv6:::1]) by mail.efficios.com (Postfix) with ESMTP id 45EE61C3A20; Thu, 14 Mar 2019 15:03:55 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.10.3 mail.efficios.com 45EE61C3A20 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=efficios.com; s=default; t=1552590235; bh=uEw3dH27D7+nHJf39R/jZ5umhLbfH+2HmbBuKjXqNfE=; h=From:To:Date:Message-Id; b=mIUMk6wtsUha6x06uyXjDDq99SdmpTyzpiHs+EApHBFHdp83mADt+v+LroEvCjAQa qX3AA/zF9E6m8WUC8C2jUYbFNf+anHE+9N6haKX/EXAEnLHUNfY1+W9HC6uJKMK4V4 h4Z0vEpvTWVY1al+/wliINuGjyeg1urNO+R2jZVgXkmF5oA6Fm1o6M5/v21s8Yj3IM 47R5LNSS7NLN57MCSPEBfbLzj0Sr7NH5LG2aRY82s1MYbUml1EmFDpo0n8yioDRu15 MR8PGxfuBt1rVh/Fp1u6DP3tn/F0Tn+tZr+e2LCy4bmjbnqkGTNfS9J+5nKrQ/baB6 onuvhSPDIQ18w== X-Virus-Scanned: amavisd-new at efficios.com Received: from mail.efficios.com ([IPv6:::1]) by localhost (mail02.efficios.com [IPv6:::1]) (amavisd-new, port 10026) with ESMTP id Dt6emO0tf4w4; Thu, 14 Mar 2019 15:03:55 -0400 (EDT) Received: from thinkos.internal.efficios.com (192-222-157-41.qc.cable.ebox.net [192.222.157.41]) by mail.efficios.com (Postfix) with ESMTPSA id 99B791C3A1A; Thu, 14 Mar 2019 15:03:54 -0400 (EDT) From: Mathieu Desnoyers To: Thomas Gleixner Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, Peter Zijlstra , "Paul E . McKenney" , Boqun Feng , Andy Lutomirski , Dave Watson , Paul Turner , Andrew Morton , Russell King , Ingo Molnar , "H . Peter Anvin" , Andi Kleen , Chris Lameter , Ben Maurer , Steven Rostedt , Josh Triplett , Linus Torvalds , Catalin Marinas , Will Deacon , Michael Kerrisk , Joel Fernandes , Mathieu Desnoyers Subject: [RFC PATCH 0/2] rseq/selftests: debugger single-stepping helper sections Date: Thu, 14 Mar 2019 15:03:44 -0400 Message-Id: <20190314190346.24744-1-mathieu.desnoyers@efficios.com> X-Mailer: git-send-email 2.11.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Those RFC patches improves the rseq selftests to properly expose data sections helping debuggers to step over rseq critical sections. * Add a new __rseq_exit_point_array section describing all rseq critical section exit points so debuggers can properly step over those. This is based on discussions with gdb and DynamoRIO developers. * The __rseq_table section contains structures that are aligned on 32 bytes, and in some cases the entries may not be aligned with the beginning of the section. Rename this section to __rseq_cs, and create a new __rseq_cs_ptr_array section containing packed 64-bit pointers to those __rseq_cs entries. Thanks, Mathieu Mathieu Desnoyers (2): rseq/selftests: Add __rseq_exit_point_array section for debuggers rseq/selftests: Introduce __rseq_cs_ptr_array, rename __rseq_table to __rseq_cs tools/testing/selftests/rseq/rseq-arm.h | 80 +++++++++++++++++++---- tools/testing/selftests/rseq/rseq-arm64.h | 57 +++++++++++++++- tools/testing/selftests/rseq/rseq-mips.h | 81 +++++++++++++++++++---- tools/testing/selftests/rseq/rseq-ppc.h | 80 +++++++++++++++++++++-- tools/testing/selftests/rseq/rseq-s390.h | 65 +++++++++++++++++- tools/testing/selftests/rseq/rseq-x86.h | 105 +++++++++++++++++++++++++++++- 6 files changed, 435 insertions(+), 33 deletions(-) -- 2.11.0