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=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 91FD8C35247 for ; Wed, 5 Feb 2020 18:00:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64BEA2467B for ; Wed, 5 Feb 2020 18:00:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727363AbgBESA5 (ORCPT ); Wed, 5 Feb 2020 13:00:57 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:49648 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727149AbgBESA5 (ORCPT ); Wed, 5 Feb 2020 13:00:57 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 015HwwW4147239 for ; Wed, 5 Feb 2020 13:00:56 -0500 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2xyhpy2gv0-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 05 Feb 2020 13:00:56 -0500 Received: from localhost by e06smtp07.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) Wed, 5 Feb 2020 18:00:50 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 015I0mi845547598 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 5 Feb 2020 18:00:48 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 97D53A4057; Wed, 5 Feb 2020 18:00:48 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 30EF2A4069; Wed, 5 Feb 2020 18:00:48 +0000 (GMT) Received: from oc7455500831.ibm.com (unknown [9.145.26.20]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 5 Feb 2020 18:00:48 +0000 (GMT) Subject: Re: [RFCv2 15/37] KVM: s390: protvirt: Implement interruption injection To: mimu@linux.ibm.com, Cornelia Huck Cc: Janosch Frank , KVM , David Hildenbrand , Thomas Huth , Ulrich Weigand , Claudio Imbrenda , Andrea Arcangeli References: <20200203131957.383915-1-borntraeger@de.ibm.com> <20200203131957.383915-16-borntraeger@de.ibm.com> <20200205123133.34ac71a2.cohuck@redhat.com> <512413a4-196e-5acb-9583-561c061e40ee@linux.ibm.com> <20200205131146.611a0d78.cohuck@redhat.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: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 20020518-0028-0000-0000-000003D7B82C X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20020518-0029-0000-0000-0000249C1797 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-02-05_05:2020-02-04,2020-02-05 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 impostorscore=0 mlxscore=0 phishscore=0 suspectscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 mlxlogscore=522 clxscore=1015 adultscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002050138 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 05.02.20 13:26, Michael Mueller wrote: > > > On 05.02.20 13:11, Cornelia Huck wrote: >> On Wed, 5 Feb 2020 12:46:39 +0100 >> Michael Mueller wrote: >> >>> On 05.02.20 12:31, Cornelia Huck wrote: >>>> On Mon,  3 Feb 2020 08:19:35 -0500 >>>> Christian Borntraeger wrote: >>>>    >>>>> From: Michael Mueller >>>>> >>>>> The patch implements interruption injection for the following >>>>> list of interruption types: >>>>> >>>>>     - I/O >>>>>       __deliver_io (III) >>>>> >>>>>     - External >>>>>       __deliver_cpu_timer (IEI) >>>>>       __deliver_ckc (IEI) >>>>>       __deliver_emergency_signal (IEI) >>>>>       __deliver_external_call (IEI) >>>>> >>>>>     - cpu restart >>>>>       __deliver_restart (IRI) >>>> >>>> Hm... what do 'III', 'IEI', and 'IRI' stand for? >>> >>> that's the kind of interruption injection being used: >>> >>> inject io interruption >>> inject external interruption >>> inject restart interruption >> >> So, maybe make this: >> >> - I/O (uses inject io interruption) >>    __ deliver_io >> >> - External (uses inject external interruption) >> (and so on) >> >> I find using the acronyms without explanation very confusing. > > Make a guess from where they are coming... > > Christian, would you please update the description accordingly. > > >   - I/O (uses inject io interruption) >     __deliver_io > >   - External (uses inject external interruption) >     __deliver_cpu_timer >     __deliver_ckc >     __deliver_emergency_signal >     __deliver_external_call > >   - cpu restart (uses inject restart interruption) >     __deliver_restart Will use that and also add. Please note that posted interrupts (GISA) are not used for protected guests as of today. > > thanks > > Michael > >> >>> >>>>    >>>>> >>>>> The service interrupt is handled in a followup patch. >>>>> >>>>> Signed-off-by: Michael Mueller >>>>> Signed-off-by: Christian Borntraeger >>>>> [fixes] >>>>> --- >>>>>    arch/s390/include/asm/kvm_host.h |  8 +++ >>>>>    arch/s390/kvm/interrupt.c        | 93 ++++++++++++++++++++++---------- >>>>>    2 files changed, 74 insertions(+), 27 deletions(-) >> >