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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF458C43334 for ; Tue, 19 Jul 2022 14:06:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237512AbiGSOG1 (ORCPT ); Tue, 19 Jul 2022 10:06:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237634AbiGSOGO (ORCPT ); Tue, 19 Jul 2022 10:06:14 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFFBA5404C; Tue, 19 Jul 2022 06:20:53 -0700 (PDT) Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 26JDCISV017833; Tue, 19 Jul 2022 13:20:53 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=content-type : mime-version : content-transfer-encoding : in-reply-to : references : cc : subject : to : from : message-id : date; s=pp1; bh=FQ0FB6ht6L08CH+OcHRoBbO7yoXPwLQdE28vOVHq/zY=; b=cy20ZYacdAoqe7zSQs4g9qTp/EnCRu5PP69dNqBxJHmpiJb/OGvtfxtnkSYapWPBegZL 9qbE1tloHYqQuyLirSvu8gC+9j7zzUzGZ3R8BNndUr9bKB8aLTWe6KDhf/Aff9ZeqFZg 6T8GqPZEbGUuJsfAZ8/j9v0qFvwsFvoSVNuOtLYgMYn+J6XQyxk2/w7O0tjw1ZW2JuG1 kQB+CP4iTh5KCwTTcNCVAoucc8oMDuAV2twBGC4kvuwHhtBiYjQsD2MjbJs6HPRfVmHZ Bn9JD1t4B099PGbTnNKLsvSjlvheXCOQJxyE3bMrEZeyrO7mJ2yBQ2VEsylTaJKq3/5F dA== Received: from ppma03ams.nl.ibm.com (62.31.33a9.ip4.static.sl-reverse.com [169.51.49.98]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3hdw9p0kya-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 19 Jul 2022 13:20:53 +0000 Received: from pps.filterd (ppma03ams.nl.ibm.com [127.0.0.1]) by ppma03ams.nl.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 26JDKo31022995; Tue, 19 Jul 2022 13:20:50 GMT Received: from b06avi18878370.portsmouth.uk.ibm.com (b06avi18878370.portsmouth.uk.ibm.com [9.149.26.194]) by ppma03ams.nl.ibm.com with ESMTP id 3hbmy8v535-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 19 Jul 2022 13:20:50 +0000 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 26JDKxkX30998940 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 19 Jul 2022 13:20:59 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A6DE742041; Tue, 19 Jul 2022 13:20:47 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8BA0F4203F; Tue, 19 Jul 2022 13:20:47 +0000 (GMT) Received: from li-ca45c2cc-336f-11b2-a85c-c6e71de567f1.ibm.com (unknown [9.171.10.188]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 19 Jul 2022 13:20:47 +0000 (GMT) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable In-Reply-To: <16b8d198-9f5b-7124-e9bc-69209a0b49ac@linux.ibm.com> References: <20220718130434.73302-1-nrb@linux.ibm.com> <16b8d198-9f5b-7124-e9bc-69209a0b49ac@linux.ibm.com> Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org Subject: Re: [PATCH v1] s390/kvm: pv: don't present the ecall interrupt twice To: Janosch Frank , borntraeger@linux.ibm.com, imbrenda@linux.ibm.com From: Nico Boehr Message-ID: <165823684731.15145.2382851660157537343@localhost.localdomain> User-Agent: alot/0.8.1 Date: Tue, 19 Jul 2022 15:20:47 +0200 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: zXqba6OGN0c575E2WY_CHJz-ydRjttw7 X-Proofpoint-ORIG-GUID: zXqba6OGN0c575E2WY_CHJz-ydRjttw7 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-19_02,2022-07-19_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 mlxlogscore=496 phishscore=0 spamscore=0 malwarescore=0 adultscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2206140000 definitions=main-2207190055 Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org Quoting Janosch Frank (2022-07-19 15:07:43) > On 7/18/22 15:04, Nico Boehr wrote: > > When the SIGP interpretation facility is present and a VCPU sends an > > ecall to another VCPU in enabled wait, the sending VCPU receives a 56 > > intercept (partial execution), so KVM can wake up the receiving CPU. > > Note that the SIGP interpretation facility will take care of the > > interrupt delivery and KVM's only job is to wake the receiving VCPU. >=20 > @Nico: Can we fixup the patch subject when picking? > The prefix normally starts with KVM: arch: Subject starts here >=20 > kvm: s390: pv: don't present the ecall interrupt twice Oh sorry for messing that up. Sure please go ahead and fixup. Thanks.