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 1EDD6C07E95 for ; Wed, 7 Jul 2021 14:57:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 05DC061C99 for ; Wed, 7 Jul 2021 14:57:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232177AbhGGPAE (ORCPT ); Wed, 7 Jul 2021 11:00:04 -0400 Received: from foss.arm.com ([217.140.110.172]:38892 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232109AbhGGPAD (ORCPT ); Wed, 7 Jul 2021 11:00:03 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 752481042; Wed, 7 Jul 2021 07:57:23 -0700 (PDT) Received: from e113632-lin (e113632-lin.cambridge.arm.com [10.1.194.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 374C73F73B; Wed, 7 Jul 2021 07:57:22 -0700 (PDT) From: Valentin Schneider To: Alexey Kardashevskiy , Guenter Roeck , Frederic Weisbecker Cc: linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org, Ingo Molnar , Peter Zijlstra , x86@kernel.org Subject: Re: [tip: sched/core] sched/core: Initialize the idle task with preemption disabled In-Reply-To: References: <20210512094636.2958515-1-valentin.schneider@arm.com> <162081815405.29796.14574924529325899839.tip-bot2@tip-bot2> <20210706194456.GA1823793@roeck-us.net> <87fswr6lqv.mognet@arm.com> <20210707120305.GB115752@lothringen> <87czru727k.mognet@arm.com> Date: Wed, 07 Jul 2021 15:57:17 +0100 Message-ID: <878s2i6uk2.mognet@arm.com> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/07/21 00:35, Alexey Kardashevskiy wrote: > On 08/07/2021 00:14, Guenter Roeck wrote: >> >> Can you reproduce the problem with a powerpc qemu emulation ? >> If so, how do you reproduce it there ? Reason for asking is that I don't >> see >> the problem with any of my powerpc emulations, and I would like to add test >> case(s) if possible. > > I can reproduce the problem on powerpc easily - qemu with "-smp 2" does it. > So on powerpc I'm chasing a slightly different problem, reported at [1]. I couldn't get it to trigger on qemu for powerpc64, and I'm still struggling with powerpc. Could you please share you qemu invocation & kernel .config? Thanks. [1]: https://lore.kernel.org/linux-next/YNSq3UQTjm6HWELA@in.ibm.com/ > > -- > Alexey