Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp2662974ybz; Mon, 27 Apr 2020 02:02:37 -0700 (PDT) X-Google-Smtp-Source: APiQypIhXptZRIiqGr88CEU9x3PRHjgY80DNN1Ijwsllbxqv7kBvlzLPiwZlksJCZRrWmIga8c1M X-Received: by 2002:a50:b286:: with SMTP id p6mr916185edd.350.1587978157487; Mon, 27 Apr 2020 02:02:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1587978157; cv=none; d=google.com; s=arc-20160816; b=andwnMdi3X6iBrZk0/KhRfjqctPY7asj+fhVUk8poIVtZaQMnYi4pId9qn5hTL2uLi /kIzaEP0JiFmk6bkogEI/kFCMtAfzFp0hwcwfO8m4D8pFdK9ldMok8GYv8o/ezeiaNJk D0DlQnjE90D3Y5MfHal/lYt/AcXd4XGLao9Qn7kcsFeAFLzXCmQKsCL7eCpBy61ca8kU pexVTJ5BIpci7wO3vd4egktxjY1OTcivR7EkLPis0PDjqnYAm1broYkvQdyGmXWfniOI BZKu6NSv+8J1DF6aFT9ToXxdukKpV9sAu3/K2JNkM9X1Gd52ecCEiNidxZoC6fAduL5i XTSA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:importance:content-transfer-encoding :mime-version:subject:references:in-reply-to:message-id:cc:to :reply-to:from:date; bh=opdrEP32bP8ZXYE6TtMYdTMi9FuG7/z8TzP7ihZkpiY=; b=bdGhK9RvrHtnjDYKTvgVG/RwLAPv8mEcF4veKLhcBCaYraqW20XkwzzNHiLPoMT9ET npVQ+u0aD/aLaqQuPszLHhVHn/iFpevkpP+6SsMWP4QKo1riy7BFgKWywvm3TG89KUoT V73ScDnjMANaZNh0cYI5/LiOQkOfGZKQvFNFUOeyWmDeTWTsQbUAE9HpmNM5qQ2ZC+bw 4R2oEY3qLDzHjYvmUidqMso1I4gvBnt9NBrcyx0hnuHWcr7BVaG5u/y7UevZyegK5xsL cIxbH0iQ2az7RJQ2c8k5QP6icnKCcLZLm6WEyUhsZ0QgZgXER1hhC5Jz4ZKzdt2OiwIl SGhQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id w13si7930193ejj.231.2020.04.27.02.02.13; Mon, 27 Apr 2020 02:02:37 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726867AbgD0JAN (ORCPT + 99 others); Mon, 27 Apr 2020 05:00:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726504AbgD0JAN (ORCPT ); Mon, 27 Apr 2020 05:00:13 -0400 Received: from mout-p-201.mailbox.org (mout-p-201.mailbox.org [IPv6:2001:67c:2050::465:201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0A7CC061A10; Mon, 27 Apr 2020 02:00:12 -0700 (PDT) Received: from smtp2.mailbox.org (smtp2.mailbox.org [80.241.60.241]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (No client certificate requested) by mout-p-201.mailbox.org (Postfix) with ESMTPS id 499dyg0GXTzQlJ3; Mon, 27 Apr 2020 11:00:11 +0200 (CEST) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp2.mailbox.org ([80.241.60.241]) by spamfilter05.heinlein-hosting.de (spamfilter05.heinlein-hosting.de [80.241.56.123]) (amavisd-new, port 10030) with ESMTP id DbjYKUVnLrBu; Mon, 27 Apr 2020 11:00:07 +0200 (CEST) Date: Mon, 27 Apr 2020 11:00:05 +0200 (CEST) From: Hagen Paul Pfeifer Reply-To: Hagen Paul Pfeifer To: Arnd Bergmann Cc: "linux-kernel@vger.kernel.org" , Florian Weimer , Al Viro , Christian Brauner , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Brian Gerst , Sami Tolvanen , David Howells , Aleksa Sarai , Andy Lutomirski , Oleg Nesterov , "Eric W . Biederman" , Arnaldo Carvalho de Melo , Sargun Dhillon , Linux API , linux-arch Message-ID: <2008370628.171531.1587978005102@office.mailbox.org> In-Reply-To: References: <20200426130100.306246-1-hagen@jauu.net> <20200426163430.22743-1-hagen@jauu.net> Subject: Re: [RFC v2] ptrace, pidfd: add pidfd_ptrace syscall MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Priority: 3 Importance: Normal X-Rspamd-Queue-Id: BC5A81693 X-Rspamd-Score: 0.45 / 15.00 / 15.00 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On April 27, 2020 10:30 AM Arnd Bergmann wrote: Hey Arnd > When you add a new system call, please add it to all architectures. > See the patches for the last few additions on how to do it, in > particular the bit around adding the arm64 compat entry that is > a bit tricky. Yes, the patch was intended to be as an rough (but x86_64 working) RFC patch to basically check if there is interest in it. Or whether there are fundamental reasons against pidfd_ptrace(). If not I will prepare v3 with all input, sure! Thank you Arnd Hagen