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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 CACEAC433F5 for ; Tue, 21 Sep 2021 08:46:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B40BF60ED5 for ; Tue, 21 Sep 2021 08:46:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231260AbhIUIsJ (ORCPT ); Tue, 21 Sep 2021 04:48:09 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:11690 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231239AbhIUIsI (ORCPT ); Tue, 21 Sep 2021 04:48:08 -0400 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 18L7TUdi021405; Tue, 21 Sep 2021 04:46:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=pp1; bh=PobOmmegEH6kXd2FN2lCCRb2+GTx6TIzMiNiHKbLoPs=; b=Nip2LyXBHqzNYS5VL/uoP8tvS0Sm2C+N9AqloUwTtOuTo7EcN/LxT6RUjT4IZ98vg54C 90a7oii9vtnP79diHtgxBym01ahxSXGRXRuVXsoBhjvHfT7BBAwbRpNEZBemqlh0lOYB nlhjE6DnqK0ICkZ6iSpFezcjciqF13Gm8NxRSx7UzVfwWy2BqCI5+WRDi/E+J+CwLuE3 JpB9PIOdzIniBErgvDX42oPJoUwDronCGbK/ImPTXJkdJwHRnLr8XF1hG6nLUe5fkMMC /db6k6ZUStxL03UwLCZbmIIjeVJb1yI/bMEjOUohkHXcZcuQEIk+d4J7ISa2c5n9eiSf 9A== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 3b7b25hkqm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Sep 2021 04:46:35 -0400 Received: from m0098417.ppops.net (m0098417.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 18L7UBD8023271; Tue, 21 Sep 2021 04:46:35 -0400 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 3b7b25hkqa-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Sep 2021 04:46:35 -0400 Received: from pps.filterd (ppma04ams.nl.ibm.com [127.0.0.1]) by ppma04ams.nl.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 18L8XDoe009919; Tue, 21 Sep 2021 08:46:33 GMT Received: from b06cxnps3075.portsmouth.uk.ibm.com (d06relay10.portsmouth.uk.ibm.com [9.149.109.195]) by ppma04ams.nl.ibm.com with ESMTP id 3b57r9hsvg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Sep 2021 08:46:33 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 18L8kTvT37814560 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 21 Sep 2021 08:46:29 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1585A5204F; Tue, 21 Sep 2021 08:46:29 +0000 (GMT) Received: from li-43c5434c-23b8-11b2-a85c-c4958fb47a68.ibm.com (unknown [9.171.63.127]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 4CA6652051; Tue, 21 Sep 2021 08:46:28 +0000 (GMT) Subject: Re: [PATCH 0/1] KVM: s390: backport for stable of "KVM: s390: index To: Paolo Bonzini , stable@vger.kernel.org Cc: gregkh@linuxfoundation.org, KVM , Cornelia Huck , Janosch Frank , David Hildenbrand , linux-s390 , Thomas Huth , Claudio Imbrenda , =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= , Nitesh Narayan Lal , Halil Pasic References: <20210920150616.15668-1-borntraeger@de.ibm.com> From: Christian Borntraeger Message-ID: Date: Tue, 21 Sep 2021 10:46:27 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 3I4wTNbfXkT_iyYtuGRFVcr9x30Xim7d X-Proofpoint-GUID: qlA7xGCSlnlUQg_f-vCG7Uo7MIE894kJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.182.1,Aquarius:18.0.790,Hydra:6.0.391,FMLib:17.0.607.475 definitions=2021-09-21_01,2021-09-20_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 spamscore=0 suspectscore=0 clxscore=1015 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109030001 definitions=main-2109210055 Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org Am 20.09.21 um 20:05 schrieb Paolo Bonzini: > On 20/09/21 17:06, Christian Borntraeger wrote: >> here is a backport for 4.19 of >> commit a3e03bc1368 ("KVM: s390: index kvm->arch.idle_mask by vcpu_idx") >> This basically removes the kick_mask parts that were introduced with >> kernel 5.0 and fixes up the location of the idle_mask to the older >> place. >> >> FWIW, it might be a good idea to also backport >> 8750e72a79dd ("KVM: remember position in kvm->vcpus array") to avoid >> a performance regression for large guests (many vCPUs) when this patch >> is applied. >> @Paolo Bonzini, would you be ok with 8750e72a79dd in older stable releases? > > Sure, I suppose you're going to send a separate backport that I can ack. It does seem to apply when cherry-picked, but I can send it as a patch if you and Greg prefer it that way.