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 709F8C35242 for ; Fri, 14 Feb 2020 22:27:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3E0742187F for ; Fri, 14 Feb 2020 22:27:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728128AbgBNW1i (ORCPT ); Fri, 14 Feb 2020 17:27:38 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:37384 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728090AbgBNW1f (ORCPT ); Fri, 14 Feb 2020 17:27:35 -0500 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01EMNuFC013025; Fri, 14 Feb 2020 17:27:35 -0500 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 2y4j8h1dkx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Feb 2020 17:27:34 -0500 Received: from m0098410.ppops.net (m0098410.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 01EMNvwX013046; Fri, 14 Feb 2020 17:27:34 -0500 Received: from ppma05wdc.us.ibm.com (1b.90.2fa9.ip4.static.sl-reverse.com [169.47.144.27]) by mx0a-001b2d01.pphosted.com with ESMTP id 2y4j8h1dkk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Feb 2020 17:27:34 -0500 Received: from pps.filterd (ppma05wdc.us.ibm.com [127.0.0.1]) by ppma05wdc.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id 01EMRGjt020134; Fri, 14 Feb 2020 22:27:33 GMT Received: from b03cxnp07029.gho.boulder.ibm.com (b03cxnp07029.gho.boulder.ibm.com [9.17.130.16]) by ppma05wdc.us.ibm.com with ESMTP id 2y5bbysw1d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Feb 2020 22:27:33 +0000 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp07029.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 01EMRU1S51511618 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 14 Feb 2020 22:27:30 GMT Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EDDCB136094; Fri, 14 Feb 2020 22:27:29 +0000 (GMT) Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 30E10136093; Fri, 14 Feb 2020 22:27:29 +0000 (GMT) Received: from localhost.localdomain (unknown [9.114.17.106]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 14 Feb 2020 22:27:29 +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 31/42] KVM: s390: protvirt: Report CPU state to Ultravisor Date: Fri, 14 Feb 2020 17:26:47 -0500 Message-Id: <20200214222658.12946-32-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 phishscore=0 impostorscore=0 bulkscore=0 malwarescore=0 mlxscore=0 adultscore=0 spamscore=0 priorityscore=1501 mlxlogscore=999 lowpriorityscore=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 VCPU states have to be reported to the ultravisor for SIGP interpretation, kdump, kexec and reboot. Signed-off-by: Janosch Frank Reviewed-by: Thomas Huth Reviewed-by: Cornelia Huck [borntraeger@de.ibm.com: patch merging, splitting, fixing] Signed-off-by: Christian Borntraeger --- arch/s390/include/asm/uv.h | 15 +++++++++++++++ arch/s390/kvm/kvm-s390.c | 7 ++++++- arch/s390/kvm/kvm-s390.h | 2 ++ arch/s390/kvm/pv.c | 22 ++++++++++++++++++++++ 4 files changed, 45 insertions(+), 1 deletion(-) diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h index 254d5769d136..7b82881ec3b4 100644 --- a/arch/s390/include/asm/uv.h +++ b/arch/s390/include/asm/uv.h @@ -37,6 +37,7 @@ #define UVC_CMD_UNPACK_IMG 0x0301 #define UVC_CMD_VERIFY_IMG 0x0302 #define UVC_CMD_PREPARE_RESET 0x0320 +#define UVC_CMD_CPU_SET_STATE 0x0330 #define UVC_CMD_SET_UNSHARE_ALL 0x0340 #define UVC_CMD_PIN_PAGE_SHARED 0x0341 #define UVC_CMD_UNPIN_PAGE_SHARED 0x0342 @@ -58,6 +59,7 @@ 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_SET_STATE = 17, BIT_UVC_CMD_PREPARE_RESET = 18, BIT_UVC_CMD_UNSHARE_ALL = 20, BIT_UVC_CMD_PIN_PAGE_SHARED = 21, @@ -164,6 +166,19 @@ struct uv_cb_unp { u64 reserved38[3]; } __packed __aligned(8); +#define PV_CPU_STATE_OPR 1 +#define PV_CPU_STATE_STP 2 +#define PV_CPU_STATE_CHKSTP 3 + +struct uv_cb_cpu_set_state { + struct uv_cb_header header; + u64 reserved08[2]; + u64 cpu_handle; + u8 reserved20[7]; + u8 state; + u64 reserved28[5]; +}; + /* * A common UV call struct for calls that take no payload * Examples: diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index ad84c1144908..5426b01e3da1 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -4396,6 +4396,7 @@ static void __enable_ibs_on_vcpu(struct kvm_vcpu *vcpu) void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu) { int i, online_vcpus, started_vcpus = 0; + u16 rc, rrc; if (!is_vcpu_stopped(vcpu)) return; @@ -4421,7 +4422,8 @@ void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu) */ __disable_ibs_on_all_vcpus(vcpu->kvm); } - + /* Let's tell the UV that we want to start again */ + kvm_s390_pv_set_cpu_state(vcpu, PV_CPU_STATE_OPR, &rc, &rrc); kvm_s390_clear_cpuflags(vcpu, CPUSTAT_STOPPED); /* * Another VCPU might have used IBS while we were offline. @@ -4436,6 +4438,7 @@ void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu) { int i, online_vcpus, started_vcpus = 0; struct kvm_vcpu *started_vcpu = NULL; + u16 rc, rrc; if (is_vcpu_stopped(vcpu)) return; @@ -4449,6 +4452,8 @@ void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu) kvm_s390_clear_stop_irq(vcpu); kvm_s390_set_cpuflags(vcpu, CPUSTAT_STOPPED); + /* Let's tell the UV that we successfully stopped the vcpu */ + kvm_s390_pv_set_cpu_state(vcpu, PV_CPU_STATE_STP, &rc, &rrc); __disable_ibs_on_vcpu(vcpu); for (i = 0; i < online_vcpus; i++) { diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index d5503dd0d1e4..1af1e30beead 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -218,6 +218,8 @@ int kvm_s390_pv_set_sec_parms(struct kvm *kvm, void *hdr, u64 length, u16 *rc, u16 *rrc); int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size, unsigned long tweak, u16 *rc, u16 *rrc); +int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state, u16 *rc, + u16 *rrc); static inline bool kvm_s390_pv_is_protected(struct kvm *kvm) { diff --git a/arch/s390/kvm/pv.c b/arch/s390/kvm/pv.c index 80169a9b43ec..b4bf6b6eb708 100644 --- a/arch/s390/kvm/pv.c +++ b/arch/s390/kvm/pv.c @@ -271,3 +271,25 @@ int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size, KVM_UV_EVENT(kvm, 3, "%s", "PROTVIRT VM UNPACK: successful"); return ret; } + +int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state, u16 *rc, + u16 *rrc) +{ + struct uv_cb_cpu_set_state uvcb = { + .header.cmd = UVC_CMD_CPU_SET_STATE, + .header.len = sizeof(uvcb), + .cpu_handle = kvm_s390_pv_handle_cpu(vcpu), + .state = state, + }; + int cc; + + if (!kvm_s390_pv_handle_cpu(vcpu)) + return -EINVAL; + + cc = uv_call(0, (u64)&uvcb); + *rc = uvcb.header.rc; + *rrc = uvcb.header.rrc; + if (cc) + return -EINVAL; + return 0; +} -- 2.25.0