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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 C33B6C3F68F for ; Fri, 14 Feb 2020 22:27:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0CDF2082F for ; Fri, 14 Feb 2020 22:27:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728149AbgBNW1k (ORCPT ); Fri, 14 Feb 2020 17:27:40 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:5614 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728143AbgBNW1j (ORCPT ); Fri, 14 Feb 2020 17:27:39 -0500 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01EMP1M4004940; Fri, 14 Feb 2020 17:27:38 -0500 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 2y5g8cchh2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Feb 2020 17:27:38 -0500 Received: from m0098404.ppops.net (m0098404.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 01EMPi1r007162; Fri, 14 Feb 2020 17:27:38 -0500 Received: from ppma02dal.us.ibm.com (a.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.10]) by mx0a-001b2d01.pphosted.com with ESMTP id 2y5g8cchgp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Feb 2020 17:27:38 -0500 Received: from pps.filterd (ppma02dal.us.ibm.com [127.0.0.1]) by ppma02dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id 01EMP8S5008471; Fri, 14 Feb 2020 22:27:37 GMT Received: from b03cxnp08026.gho.boulder.ibm.com (b03cxnp08026.gho.boulder.ibm.com [9.17.130.18]) by ppma02dal.us.ibm.com with ESMTP id 2y5bc0vd1m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Feb 2020 22:27:37 +0000 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 01EMRXO442598904 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 14 Feb 2020 22:27:33 GMT Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7A9EC136093; Fri, 14 Feb 2020 22:27:33 +0000 (GMT) Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B188B136091; Fri, 14 Feb 2020 22:27:32 +0000 (GMT) Received: from localhost.localdomain (unknown [9.114.17.106]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 14 Feb 2020 22:27:32 +0000 (GMT) From: Christian Borntraeger To: Christian Borntraeger , Janosch Frank Cc: KVM , Cornelia Huck , David Hildenbrand , Thomas Huth , Ulrich Weigand , Claudio Imbrenda , linux-s390 , Michael Mueller , Vasily Gorbik , Janosch Frank Subject: [PATCH v2 35/42] KVM: s390: protvirt: Add UV cpu reset calls Date: Fri, 14 Feb 2020 17:26:51 -0500 Message-Id: <20200214222658.12946-36-borntraeger@de.ibm.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200214222658.12946-1-borntraeger@de.ibm.com> References: <20200214222658.12946-1-borntraeger@de.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-02-14_08:2020-02-14,2020-02-14 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 clxscore=1015 mlxlogscore=999 lowpriorityscore=0 phishscore=0 priorityscore=1501 mlxscore=0 spamscore=0 bulkscore=0 adultscore=0 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002140165 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Janosch Frank For protected VMs, the VCPU resets are done by the Ultravisor, as KVM has no access to the VCPU registers. Note that the ultravisor will only accept a call for the exact reset that has been requested. Signed-off-by: Janosch Frank Reviewed-by: Thomas Huth Reviewed-by: David Hildenbrand Reviewed-by: Cornelia Huck [borntraeger@de.ibm.com: patch merging, splitting, fixing] Signed-off-by: Christian Borntraeger --- arch/s390/include/asm/uv.h | 6 ++++++ arch/s390/kvm/kvm-s390.c | 20 ++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h index d59825d95b9d..d4fb54231932 100644 --- a/arch/s390/include/asm/uv.h +++ b/arch/s390/include/asm/uv.h @@ -36,7 +36,10 @@ #define UVC_CMD_SET_SEC_CONF_PARAMS 0x0300 #define UVC_CMD_UNPACK_IMG 0x0301 #define UVC_CMD_VERIFY_IMG 0x0302 +#define UVC_CMD_CPU_RESET 0x0310 +#define UVC_CMD_CPU_RESET_INITIAL 0x0311 #define UVC_CMD_PREPARE_RESET 0x0320 +#define UVC_CMD_CPU_RESET_CLEAR 0x0321 #define UVC_CMD_CPU_SET_STATE 0x0330 #define UVC_CMD_SET_UNSHARE_ALL 0x0340 #define UVC_CMD_PIN_PAGE_SHARED 0x0341 @@ -59,8 +62,11 @@ enum uv_cmds_inst { BIT_UVC_CMD_SET_SEC_PARMS = 11, BIT_UVC_CMD_UNPACK_IMG = 13, BIT_UVC_CMD_VERIFY_IMG = 14, + BIT_UVC_CMD_CPU_RESET = 15, + BIT_UVC_CMD_CPU_RESET_INITIAL = 16, BIT_UVC_CMD_CPU_SET_STATE = 17, BIT_UVC_CMD_PREPARE_RESET = 18, + BIT_UVC_CMD_CPU_PERFORM_CLEAR_RESET = 19, BIT_UVC_CMD_UNSHARE_ALL = 20, BIT_UVC_CMD_PIN_PAGE_SHARED = 21, BIT_UVC_CMD_UNPIN_PAGE_SHARED = 22, diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 16af4d1a2c29..932f7f32e82f 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -4695,6 +4695,7 @@ long kvm_arch_vcpu_ioctl(struct file *filp, void __user *argp = (void __user *)arg; int idx; long r; + u16 rc, rrc; vcpu_load(vcpu); @@ -4716,14 +4717,33 @@ long kvm_arch_vcpu_ioctl(struct file *filp, case KVM_S390_CLEAR_RESET: r = 0; kvm_arch_vcpu_ioctl_clear_reset(vcpu); + if (kvm_s390_pv_handle_cpu(vcpu)) { + r = uv_cmd_nodata(kvm_s390_pv_handle_cpu(vcpu), + UVC_CMD_CPU_RESET_CLEAR, &rc, &rrc); + VCPU_EVENT(vcpu, 3, "PROTVIRT RESET CLEAR VCPU: rc %x rrc %x", + rc, rrc); + } break; case KVM_S390_INITIAL_RESET: r = 0; kvm_arch_vcpu_ioctl_initial_reset(vcpu); + if (kvm_s390_pv_handle_cpu(vcpu)) { + r = uv_cmd_nodata(kvm_s390_pv_handle_cpu(vcpu), + UVC_CMD_CPU_RESET_INITIAL, + &rc, &rrc); + VCPU_EVENT(vcpu, 3, "PROTVIRT RESET INITIAL VCPU: rc %x rrc %x", + rc, rrc); + } break; case KVM_S390_NORMAL_RESET: r = 0; kvm_arch_vcpu_ioctl_normal_reset(vcpu); + if (kvm_s390_pv_handle_cpu(vcpu)) { + r = uv_cmd_nodata(kvm_s390_pv_handle_cpu(vcpu), + UVC_CMD_CPU_RESET, &rc, &rrc); + VCPU_EVENT(vcpu, 3, "PROTVIRT RESET NORMAL VCPU: rc %x rrc %x", + rc, rrc); + } break; case KVM_SET_ONE_REG: case KVM_GET_ONE_REG: { -- 2.25.0