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,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 A9F0EC2D0E4 for ; Tue, 24 Nov 2020 13:48:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FFE92083E for ; Tue, 24 Nov 2020 13:48:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="pXye4oCX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388637AbgKXNsW (ORCPT ); Tue, 24 Nov 2020 08:48:22 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:15452 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388627AbgKXNrs (ORCPT ); Tue, 24 Nov 2020 08:47:48 -0500 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AODWxbJ033452; Tue, 24 Nov 2020 08:47:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : references : date : in-reply-to : message-id : mime-version : content-type; s=pp1; bh=OjF6bqqG0pJRYJr2z1eRX4IAQ9frRRFFEKx1Ea61Tvg=; b=pXye4oCXP/M16Oj70boLGij8UFF93V+5GXxmfjUEBUGwBXHdAN1BOqjYgBeyNln5baev wn0wnXTWiTXBjeukkeKrVg3x8k+YINhLVfh7HSn9gN0iijiRqN/Wzc8wFAQEWq13Se6v N4xYCFlgb+uqRrk35YNRBAn/3yaGvt4YbYGIxvEFutdV81Qe7Xm7NLQ/YBH5pXUALi2t 7+HpAtx/DLcmi2dGQqAge02ZOgEJ1ErCeIv4YOTdxlN1FhEBKxlyJK7nLMfz/k/A1lMn UNABi3sO6I0tX/wJrn/fIW5tdMP+LK2kEC83DtsfiDgKT8qc7FumYqGU0Nb/I892nWkT iQ== Received: from ppma04ams.nl.ibm.com (63.31.33a9.ip4.static.sl-reverse.com [169.51.49.99]) by mx0a-001b2d01.pphosted.com with ESMTP id 350nsds43k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 24 Nov 2020 08:47:35 -0500 Received: from pps.filterd (ppma04ams.nl.ibm.com [127.0.0.1]) by ppma04ams.nl.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0AODc9l3003735; Tue, 24 Nov 2020 13:47:33 GMT Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by ppma04ams.nl.ibm.com with ESMTP id 34xth8khek-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 24 Nov 2020 13:47:33 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AODlVXp6423080 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 24 Nov 2020 13:47:31 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 26EAC52052; Tue, 24 Nov 2020 13:47:31 +0000 (GMT) Received: from tuxmaker.linux.ibm.com (unknown [9.152.85.9]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id CDED252054; Tue, 24 Nov 2020 13:47:30 +0000 (GMT) From: Sven Schnelle To: Peter Zijlstra Cc: rafael@kernel.org, viresh.kumar@linaro.org, mingo@kernel.org, x86@kernel.org, mark.rutland@arm.com, will@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] More RCU vs idle fixes References: <20201120114145.197714127@infradead.org> Date: Tue, 24 Nov 2020 14:47:27 +0100 In-Reply-To: <20201120114145.197714127@infradead.org> (Peter Zijlstra's message of "Fri, 20 Nov 2020 12:41:45 +0100") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-24_04:2020-11-24,2020-11-24 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 mlxlogscore=702 malwarescore=0 bulkscore=0 impostorscore=0 clxscore=1011 lowpriorityscore=0 phishscore=0 mlxscore=0 priorityscore=1501 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011240081 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Peter Zijlstra writes: > Both arm64 and s390 are tripping over arch_cpu_idle() RCU,tracing,lockdep > interaction. While looking at that I also found fail in inte_idle. > > Please consider for this cycle. Is anyone taking this patchset? For s390, we also need to change the local_irq_safe/restore to the raw variants in enabled_wait() in arch/s390/kernel/idle.c. I can make a patch and carry that via the s390 tree, but i want to make sure the s390 change in this patchset also reaches linus' tree. Thanks Sven