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Tue, 17 May 2022 16:54:53 GMT Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by ppma03ams.nl.ibm.com with ESMTP id 3g2429chsr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 May 2022 16:54:53 +0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 24HGsosq52101438 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 May 2022 16:54:50 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 93E28AE051; Tue, 17 May 2022 16:54:50 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6487FAE045; Tue, 17 May 2022 16:54:50 +0000 (GMT) Received: from p-imbrenda (unknown [9.152.224.40]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 17 May 2022 16:54:50 +0000 (GMT) Date: Tue, 17 May 2022 18:48:12 +0200 From: Claudio Imbrenda To: Janosch Frank Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org, borntraeger@linux.ibm.com Subject: Re: [PATCH v6 08/11] kvm: s390: Add KVM_CAP_S390_PROTECTED_DUMP Message-ID: <20220517184812.48df017c@p-imbrenda> In-Reply-To: <20220517163629.3443-9-frankja@linux.ibm.com> References: <20220517163629.3443-1-frankja@linux.ibm.com> <20220517163629.3443-9-frankja@linux.ibm.com> Organization: IBM X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: FSdIDoB7mwk4B5QbtEId5ORqS0CUVwsX X-Proofpoint-ORIG-GUID: FSdIDoB7mwk4B5QbtEId5ORqS0CUVwsX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-17_03,2022-05-17_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxlogscore=784 suspectscore=0 spamscore=0 impostorscore=0 clxscore=1015 phishscore=0 malwarescore=0 mlxscore=0 adultscore=0 bulkscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2205170101 Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org On Tue, 17 May 2022 16:36:26 +0000 Janosch Frank wrote: > The capability indicates dump support for protected VMs. > > Signed-off-by: Janosch Frank Reviewed-by: Claudio Imbrenda > --- > arch/s390/kvm/kvm-s390.c | 20 ++++++++++++++++++++ > include/uapi/linux/kvm.h | 1 + > 2 files changed, 21 insertions(+) > > diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c > index 1938756d4a32..99ce1aced86b 100644 > --- a/arch/s390/kvm/kvm-s390.c > +++ b/arch/s390/kvm/kvm-s390.c > @@ -606,6 +606,26 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) > case KVM_CAP_S390_PROTECTED: > r = is_prot_virt_host(); > break; > + case KVM_CAP_S390_PROTECTED_DUMP: { > + u64 pv_cmds_dump[] = { > + BIT_UVC_CMD_DUMP_INIT, > + BIT_UVC_CMD_DUMP_CONFIG_STOR_STATE, > + BIT_UVC_CMD_DUMP_CPU, > + BIT_UVC_CMD_DUMP_COMPLETE, > + }; > + int i; > + > + r = is_prot_virt_host(); > + > + for (i = 0; i < ARRAY_SIZE(pv_cmds_dump); i++) { > + if (!test_bit_inv(pv_cmds_dump[i], > + (unsigned long *)&uv_info.inst_calls_list)) { > + r = 0; > + break; > + } > + } > + break; > + } > default: > r = 0; > } > diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h > index 204b06e3a50b..108bc7b7a71b 100644 > --- a/include/uapi/linux/kvm.h > +++ b/include/uapi/linux/kvm.h > @@ -1144,6 +1144,7 @@ struct kvm_ppc_resize_hpt { > #define KVM_CAP_S390_MEM_OP_EXTENSION 211 > #define KVM_CAP_PMU_CAPABILITY 212 > #define KVM_CAP_DISABLE_QUIRKS2 213 > +#define KVM_CAP_S390_PROTECTED_DUMP 214 > > #ifdef KVM_CAP_IRQ_ROUTING >