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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 23AA0C48BE8 for ; Wed, 16 Jun 2021 00:23:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D7426109E for ; Wed, 16 Jun 2021 00:23:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231757AbhFPAZ7 (ORCPT ); Tue, 15 Jun 2021 20:25:59 -0400 Received: from kvm5.telegraphics.com.au ([98.124.60.144]:39478 "EHLO kvm5.telegraphics.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231742AbhFPAZy (ORCPT ); Tue, 15 Jun 2021 20:25:54 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by kvm5.telegraphics.com.au (Postfix) with ESMTP id 2FF9D2BAEC; Tue, 15 Jun 2021 20:23:43 -0400 (EDT) Date: Wed, 16 Jun 2021 10:23:41 +1000 (AEST) From: Finn Thain To: "Eric W. Biederman" , Michael Schmitz cc: Linus Torvalds , linux-arch , Jens Axboe , Oleg Nesterov , Al Viro , Linux Kernel Mailing List , Richard Henderson , Ivan Kokshaysky , Matt Turner , alpha , Geert Uytterhoeven , linux-m68k , Arnd Bergmann , Ley Foon Tan , Tejun Heo , Kees Cook , John Paul Adrian Glaubitz Subject: Re: Kernel stack read with PTRACE_EVENT_EXIT and io_uring threads In-Reply-To: <7277aa4b-5d3f-6bb3-379a-470df4addd15@gmail.com> Message-ID: <87a5aca-e968-a1b6-e7e8-76ea2c418314@linux-m68k.org> References: <87sg1p30a1.fsf@disp2133> <87pmwsytb3.fsf@disp2133> <87sg1lwhvm.fsf@disp2133> <6e47eff8-d0a4-8390-1222-e975bfbf3a65@gmail.com> <924ec53c-2fd9-2e1c-bbb1-3fda49809be4@gmail.com> <87eed4v2dc.fsf@disp2133> <5929e116-fa61-b211-342a-c706dcb834ca@gmail.com> <87fsxjorgs.fsf@disp2133> <7277aa4b-5d3f-6bb3-379a-470df4addd15@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 16 Jun 2021, Michael Schmitz wrote: > > > > Do you happen to know if there is userspace that will run in > > qemu-system-m68k that can be used for testing? > > I surmise so. I don't use qemu myself - either ARAnyM, or actual > hardware. Hardware is limited to 14 MB RAM, which has prevented me from > using more than simple regression testing. In particular, I can't test > sys_io_uring_setup there. > > Adrian uses qemu a lot, and has supplied disk images to work from on > occasion. Maybe he's got something recent enough to support > sys_io_uring_setup ... I've CC:ed him in, as I'd love to do some more > testing as well. > As well as Debian/m68k, there is also a Gentoo/m68k stage3 rootfs available here: https://sourceforge.net/projects/linux-mac68k/files/Gentoo%20m68k%20unauthorized/ I built that rootfs last year using Catalyst. Some background (including the qemu-system-m68k command-line) can be found here: https://forums.gentoo.org/viewtopic-t-1100780.html