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Wed, 12 Aug 2026 08:07:59 +0000 (GMT) Received: from [9.224.77.173] (unknown [9.224.77.173]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 12 Aug 2026 08:07:59 +0000 (GMT) Message-ID: Date: Wed, 12 Aug 2026 10:07:58 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 09/11] KVM: s390: Fix kvm_s390_clear_pv_state() To: Claudio Imbrenda , linux-kernel@vger.kernel.org Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org, frankja@linux.ibm.com, david@kernel.org, seiden@linux.ibm.com, nrb@linux.ibm.com, schlameuss@linux.ibm.com, gra@linux.ibm.com References: <20260811155641.219777-1-imbrenda@linux.ibm.com> <20260811155641.219777-10-imbrenda@linux.ibm.com> Content-Language: en-US From: Christian Borntraeger In-Reply-To: <20260811155641.219777-10-imbrenda@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEyMDA2MyBTYWx0ZWRfXzRNF4pChKApG hrh2+46LrcfZWObK74qFCiH89RNa51EWEX3wxxXJ+8Sl6SC/Rg0DDEabyZXte4zLqmqtLu5zYeD Wb4c8m6P/9tyN+VrBFATuzL2hXcwrhOUnlPKda6e40C09cCuRx14Pq8qZfOiGuVb0nNTEXaZ/rC 4B8AWjGo/9nfQNjbLnKXTyGZOR6wyuYpsIlzqNVAncRamk4bQAFRJno7omaiaX667BJFGjJ3nVm +Ofj/CWGm2INrUNI4KPwy0LO78RM/el63DqFveSlrmjmbT0jW/Uo016UPK/61ZwIwHOcg1jkrcw bDETzAHsCV0kTxzGi35/sZvULhYOVXXfUrD9RTKTdP2jLfMIGDkS0nRt+tD6RhVjUHPCBSaxSlk nHupuRbWrZcnhXogrcspw3RndqGMDfyxOYKdnAAw/JWklBeywSb1I+rowTpyS9649PKpRgs0sKK l9MB+yhAKwP7v5hIfaQ== X-Proofpoint-ORIG-GUID: hARU0pCnqrsIhUDxyqbPBLF64ctGmZIv X-Proofpoint-Spam-Info: AW1haW4tMjYwODEyMDA2MyBTYWx0ZWRfX1VvcENgo1Ndb sbC6NRwp6UpyJ3r3/7vB8/aNQ5kn+9aRbqsX+EgZGR/vZsOc+SX+ZW08WLN1tFoDivXyVGuW67F +yS/hBXp8CHShye6vt7KKOI7jpCrKXQ= X-Authority-Analysis: v=2.4 cv=IfK3n2qa c=1 sm=1 tr=0 ts=6a7c29e4 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=z9yk2LTjqm7JGs_eJUgA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: hARU0pCnqrsIhUDxyqbPBLF64ctGmZIv X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-12_02,2026-08-10_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 malwarescore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608120063 Am 11.08.26 um 17:56 schrieb Claudio Imbrenda: > kvm_s390_clear_pv_state() needs to also clear the dumping flag, to > allow the protected VM to be started again (as non-protected, with all > protected state safely destroyed) after a forced reboot while a > protected dump was ongoing and not completed. > > Fixes: e40df9efd68a ("KVM: s390: pv: clear the state without memset") > Signed-off-by: Claudio Imbrenda Reviewed-by: Christian Borntraeger > --- > arch/s390/kvm/pv.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/s390/kvm/pv.c b/arch/s390/kvm/pv.c > index b02e0159d3cd..98a9a57f71b9 100644 > --- a/arch/s390/kvm/pv.c > +++ b/arch/s390/kvm/pv.c > @@ -242,6 +242,10 @@ static void kvm_s390_clear_pv_state(struct kvm *kvm) > kvm->arch.pv.guest_len = 0; > kvm->arch.pv.stor_base = 0; > kvm->arch.pv.stor_var = NULL; > + if (kvm->arch.pv.dumping) { > + kvm_s390_vcpu_unblock_all(kvm); > + kvm->arch.pv.dumping = false; > + } > } > > static void kvm_s390_pv_dispose_cpu(struct kvm_vcpu *vcpu, bool free_stor_base)