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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 195AAC33CAC for ; Thu, 6 Feb 2020 11:11:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E00FC206CC for ; Thu, 6 Feb 2020 11:11:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727559AbgBFLLq (ORCPT ); Thu, 6 Feb 2020 06:11:46 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:4372 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727455AbgBFLLp (ORCPT ); Thu, 6 Feb 2020 06:11:45 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 016BAXOC102457 for ; Thu, 6 Feb 2020 06:11:44 -0500 Received: from e06smtp03.uk.ibm.com (e06smtp03.uk.ibm.com [195.75.94.99]) by mx0b-001b2d01.pphosted.com with ESMTP id 2xyhmj7473-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 06 Feb 2020 06:11:43 -0500 Received: from localhost by e06smtp03.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) Thu, 6 Feb 2020 11:11:39 -0000 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 016BBb8859769078 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 6 Feb 2020 11:11:37 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C123042041; Thu, 6 Feb 2020 11:11:37 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 76CCB4203F; Thu, 6 Feb 2020 11:11:37 +0000 (GMT) Received: from oc7455500831.ibm.com (unknown [9.152.224.61]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 6 Feb 2020 11:11:37 +0000 (GMT) Subject: Re: [RFCv2 35/37] KVM: s390: protvirt: Mask PSW interrupt bits for interception 104 and 112 To: Cornelia Huck Cc: Janosch Frank , KVM , David Hildenbrand , Thomas Huth , Ulrich Weigand , Claudio Imbrenda , Andrea Arcangeli References: <20200203131957.383915-1-borntraeger@de.ibm.com> <20200203131957.383915-36-borntraeger@de.ibm.com> <20200206111027.3f7fd6c4.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: <20200206111027.3f7fd6c4.cohuck@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 20020611-0012-0000-0000-000003843E85 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20020611-0013-0000-0000-000021C0AC0F Message-Id: <3963f594-87d1-7230-2513-f11d003b9e87@de.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-02-06_01:2020-02-06,2020-02-06 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 impostorscore=0 malwarescore=0 priorityscore=1501 adultscore=0 mlxlogscore=695 suspectscore=0 bulkscore=0 lowpriorityscore=0 spamscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002060084 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 06.02.20 11:10, Cornelia Huck wrote: > On Mon, 3 Feb 2020 08:19:55 -0500 > Christian Borntraeger wrote: > >> From: Janosch Frank >> >> We're not allowed to inject interrupts on those intercept codes. As our > > Spell out what these codes actually are? We're not allowed to inject interrupts on intercepts that leave the guest state in an "in-beetween" state where the next SIE entry will do a continuation. Namely secure instruction interception and secure prefix interception... >> @@ -4082,10 +4083,15 @@ static int __vcpu_run(struct kvm_vcpu *vcpu) >> } >> exit_reason = sie64a(vcpu->arch.sie_block, >> vcpu->run->s.regs.gprs); >> + /* This will likely be moved into a new function. */ > > Hm? Unless you have a good naming for such function, will remove this comment. I tried that but I the end result was not better or worse. > >> if (kvm_s390_pv_is_protected(vcpu->kvm)) { >> memcpy(vcpu->run->s.regs.gprs, >> sie_page->pv_grregs, >> sizeof(sie_page->pv_grregs)); >> + if (vcpu->arch.sie_block->icptcode == ICPT_PV_INSTR || >> + vcpu->arch.sie_block->icptcode == ICPT_PV_PREF) { >> + vcpu->arch.sie_block->gpsw.mask &= ~PSW_INT_MASK; >> + } >> } >> local_irq_disable(); >> __enable_cpu_timer_accounting(vcpu); >