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Tue, 13 Aug 2024 11:54:37 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A894A20040; Tue, 13 Aug 2024 11:54:35 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 478202004B; Tue, 13 Aug 2024 11:54:35 +0000 (GMT) Received: from [9.179.17.163] (unknown [9.179.17.163]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 13 Aug 2024 11:54:35 +0000 (GMT) Message-ID: Date: Tue, 13 Aug 2024 13:54:35 +0200 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 00/10] selftests: kvm: s390: Add s390x ucontrol selftests To: Christoph Schlameuss , kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, linux-kselftest@vger.kernel.org, Paolo Bonzini , Shuah Khan , Christian Borntraeger , Claudio Imbrenda , David Hildenbrand , Nina Schoetterl-Glausch References: <20240807154512.316936-1-schlameuss@linux.ibm.com> Content-Language: en-US From: Janosch Frank Autocrypt: addr=frankja@linux.ibm.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: qXS5Pgm6HHr9_yG5uXThOrG0WbmdPA37 X-Proofpoint-ORIG-GUID: EvYWpQjwpMaIsQWiP8k_s-0kmQvdSarp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-13_03,2024-08-13_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 suspectscore=0 mlxlogscore=700 priorityscore=1501 impostorscore=0 lowpriorityscore=0 mlxscore=0 malwarescore=0 clxscore=1011 phishscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408130083 On 8/7/24 5:45 PM, Christoph Schlameuss wrote: > This patch series adds a selftest suite to validate the s390x > architecture specific ucontrol KVM interface. > > When creating a VM on s390x it is possible to create it as userspace > controlled VM or in short ucontrol VM. > These VMs delegates the management of the VM to userspace instead > of handling most events within the kernel. Consequently the userspace > has to manage interrupts, memory allocation etc. > > Before this patch set this functionality lacks any public test cases. > It is desirable to add test cases for this interface to be able to > reduce the risk of breaking changes in the future. > > In order to provision a ucontrol VM the kernel needs to be compiled with > the CONFIG_KVM_S390_UCONTROL enabled. The users with sys_admin capability > can then create a new ucontrol VM providing the KVM_VM_S390_UCONTROL > parameter to the KVM_CREATE_VM ioctl. > > The kernels existing selftest helper functions can only be partially be > reused for these tests. I've picked up patches #1-6 and 10 to get some testing in and make the series smaller.