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Tue, 17 Feb 2026 09:03:05 +0000 Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 61H933cY56230192 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 Feb 2026 09:03:04 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DB38B20043; Tue, 17 Feb 2026 09:03:03 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2592020040; Tue, 17 Feb 2026 09:03:02 +0000 (GMT) Received: from [9.111.58.187] (unknown [9.111.58.187]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 17 Feb 2026 09:03:01 +0000 (GMT) Message-ID: <709b864f-9daa-4a48-b3d6-39baedce63b2@linux.ibm.com> Date: Tue, 17 Feb 2026 14:33:01 +0530 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [Linux PPC] KVM PR and KVM HV do not work if the kernel was compiled with PREEMPT To: Christian Zigotzky , linuxppc-dev , "kvm-ppc@vger.kernel.org" Cc: "R.T.Dickinson" , hypexed@yahoo.com.au, mad skateman , Christian Zigotzky References: <185d7a42-f7b4-44e1-a129-f5989d211c74@linux.ibm.com> <40154f6a-39da-959d-e039-5ab9ff62db3c@xenosoft.de> Content-Language: en-US From: Shrikanth Hegde In-Reply-To: <40154f6a-39da-959d-e039-5ab9ff62db3c@xenosoft.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE3MDA3MSBTYWx0ZWRfX3lWOIUnx1arH 8gtHY+X7fs3cqKOdBp2VQJbch83tyYAvddPMwmI3bGvwqrZr7z4izV21NZLxK25gUD017ys3WfG 6kVMOrwUa+t03zP0NWB6cvuNra6UpqmgtQJIYs/MyJwRP056NsMVC0b6O7uKUplWQ8IruFXCep9 DxaPI4q/9wfgeCftzIF2SuhEaV1wJYM88uCEyDzkvtjA4B3LPL01GtdTu1tkxYl2zHA8kr5JcD+ IcGzN+0494LXag518qAzYru8Unv3BMP7S7hHLlms/bIwnvRQhssPXMuxCmzOH5xOOh7+JJ409f1 cbrLkYT5zruCaHNiXzAFTc707NHFIGCsvkyVk8xZXeHaQjHO3M9vXW01Iw71eKgznA2RmC4c3ZY a3whkAUbECYEJf3WelIqZRpOpfAMt4XqQmge56ZM5lhTstKf6GsmtmkMNfnvmW0AsKoJ2y+Fbf6 C04pR56OZaxIyl0Bbiw== X-Proofpoint-ORIG-GUID: ZM7EQN83RdhOHsHwF6jxsysFuG2S23Lk X-Proofpoint-GUID: TDI10gho6kg4nqXO0nTVu-q4rzPq_Ijh X-Authority-Analysis: v=2.4 cv=M7hA6iws c=1 sm=1 tr=0 ts=69942eca cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=3C8m8oGrICBjaXfL1acA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-17_01,2026-02-16_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 malwarescore=0 lowpriorityscore=0 clxscore=1015 phishscore=0 impostorscore=0 suspectscore=0 priorityscore=1501 adultscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602170071 On 2/17/26 2:22 PM, Christian Zigotzky wrote: > Hi, > > Thank you for your patch. I tested the latest git kernel with your patch > today. Unfortunately the system freezes while booting the VM with KVM HV. > > Cheers, > Christian > > Would it be possible to share the console log or boot log of KVM to the point it freezes?