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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 B9D11C33CB2 for ; Fri, 31 Jan 2020 11:50:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 93FCC20705 for ; Fri, 31 Jan 2020 11:50:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728513AbgAaLux (ORCPT ); Fri, 31 Jan 2020 06:50:53 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:28008 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728473AbgAaLuw (ORCPT ); Fri, 31 Jan 2020 06:50:52 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00VBoEGF015014 for ; Fri, 31 Jan 2020 06:50:51 -0500 Received: from e06smtp04.uk.ibm.com (e06smtp04.uk.ibm.com [195.75.94.100]) by mx0b-001b2d01.pphosted.com with ESMTP id 2xv09xwg14-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 31 Jan 2020 06:50:51 -0500 Received: from localhost by e06smtp04.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 31 Jan 2020 11:50:46 -0000 Received: from d06av24.portsmouth.uk.ibm.com (d06av24.portsmouth.uk.ibm.com [9.149.105.60]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 00VBnq8c27394364 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 31 Jan 2020 11:49:52 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AB9CA4204F; Fri, 31 Jan 2020 11:50:44 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 637AB42045; Fri, 31 Jan 2020 11:50:44 +0000 (GMT) Received: from oc7455500831.ibm.com (unknown [9.152.224.41]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 31 Jan 2020 11:50:44 +0000 (GMT) Subject: Re: [PATCH v10 3/6] KVM: s390: Add new reset vcpu API To: Janosch Frank , kvm@vger.kernel.org Cc: thuth@redhat.com, david@redhat.com, cohuck@redhat.com, linux-s390@vger.kernel.org References: <20200131100205.74720-1-frankja@linux.ibm.com> <20200131100205.74720-4-frankja@linux.ibm.com> From: Christian Borntraeger Autocrypt: addr=borntraeger@de.ibm.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: <20200131100205.74720-4-frankja@linux.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 20013111-0016-0000-0000-000002E2812C X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20013111-0017-0000-0000-000033455076 Message-Id: <982f4183-71f9-5d31-1943-7bedc08d72bf@de.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-01-31_03:2020-01-31,2020-01-31 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 mlxlogscore=887 mlxscore=0 suspectscore=0 malwarescore=0 bulkscore=0 adultscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1911200001 definitions=main-2001310104 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 31.01.20 11:02, Janosch Frank wrote: > The architecture states that we need to reset local IRQs for all CPU > resets. Because the old reset interface did not support the normal CPU > reset we never did that on a normal reset. > > Let's implement an interface for the missing normal and clear resets > and reset all local IRQs, registers and control structures as stated > in the architecture. > > Userspace might already reset the registers via the vcpu run struct, > but as we need the interface for the interrupt clearing part anyway, > we implement the resets fully and don't rely on userspace to reset the > rest. > > Signed-off-by: Janosch Frank > Reviewed-by: Cornelia Huck > Reviewed-by: Christian Borntraeger thanks applied.