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Wed, 12 Aug 2026 18:58:42 +0000 (GMT) Received: from osiris (unknown [9.111.47.31]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTPS; Wed, 12 Aug 2026 18:58:42 +0000 (GMT) Date: Wed, 12 Aug 2026 20:58:40 +0200 From: Steffen Eiden To: Sean Christopherson Cc: Christian Borntraeger , kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, Alexander Gordeev , Andreas Grapentin , Arnd Bergmann , Catalin Marinas , Claudio Imbrenda , David Hildenbrand , Friedrich Welter , Fuad Tabba , Gautam Gala , Hariharan Mari , Heiko Carstens , Hendrik Brueckner , Ilya Leoshkevich , Janosch Frank , Joey Gouly , Marc Zyngier , Nico Boehr , Nina Schoetterl-Glausch , Oliver Upton , Paolo Bonzini , Suzuki K Poulose , Sven Schnelle , Ulrich Weigand , Vasily Gorbik , Will Deacon , Zenghui Yu Subject: Re: [PATCH v6 00/33] KVM: s390: Introduce arm64 KVM Message-ID: <20260812185840.593734-A-seiden@linux.ibm.com> References: <20260812153631.3376090-1-seiden@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEyMDE0OSBTYWx0ZWRfX7MoJ9Hv6E3GW /R4OHd93lFRt+5GF7wRMy49aJ/aGveR5pLMFUFxa5qD69Z5G1Nv+i/ucQPxuNkLSnDgqEMDX9Yn xDCTKYVdXnqKJelQXOX8iKnSohSgt9Hr4SzUweYnnuQ4hNozjR3HWjUMZDCzeyrm9VBAJeWFail SInHiG8wdlZJ0Tn9/lN9NG49QrShaGR+2Rl7o+Uw2NkvexTm2fOWTCW55VFmplHKsm6wMXmH3tD U9/J3IA0FcSlbxaYN3TO2wtJ4pIPQvaVrAZulx/hVC9RqGu3VRfZgVitdCZjGFE0lN8uyn2QZZ3 qBsSMHKgCYUjLPw/Vj/JvArVOI3uJDxpjxUrIvnSZv/4kjdmZOe/jg9Mq4TTq9cvu8JoWpTttq8 hkjGTryP5sw1cwner/mnuciytpdflA66cu2HXolbhnw0RLf+WWTcOkDTF/lF+explUcikXpfZi9 7CLBfbSFlGYINj3nb0w== X-Proofpoint-Spam-Info: AW1haW4tMjYwODEyMDE0OSBTYWx0ZWRfX6Lxzgh2yMPel uDXg906lKYk8eeo2lCl1YXeFdCXlr/MpcsjXRkxKB8yX6ajniMPDyRQE0PmWJSOLPHrnG/iETrq IXvPiWiwxDvrQckLrZYHqPok82/ZJuA= X-Authority-Analysis: v=2.4 cv=RqD16imK c=1 sm=1 tr=0 ts=6a7cc269 cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=kj9zAlcOel0A:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=SCr8v9bMOGvgieW_VgsA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-GUID: bfh4ZLVX5o_CeTAzpesViq7ppkLy3-3k X-Proofpoint-ORIG-GUID: evfxV4d3bvWDP6R3TgawuGZbaDCSD4y4 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_05,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 suspectscore=0 lowpriorityscore=0 clxscore=1015 adultscore=0 bulkscore=0 malwarescore=0 impostorscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608120149 On Wed, Aug 12, 2026 at 09:36:26AM -0700, Sean Christopherson wrote: > On Wed, Aug 12, 2026, Christian Borntraeger wrote: > > Am 12.08.26 um 17:35 schrieb Steffen Eiden: > > > > > C) KVM/s390 reorganization (patches 12-22): > > > Prepare s390 for a second KVM module. Move existing s390 KVM code into > > > dedicated s390 and gmap subdirectories to make room for a second KVM > > > implementation. Refactor gmap to better integrate with the second KVM > > > implementation. GMAP hides a few features only required when managing s390 > > > guests: Storage keys, CMMA, and prefix handling. Those are guarded behind an > > > #if KVM_S390_MANAGES_S390_GUEST. Only features which implementation would > > > break kvm-arm64 code are guarded. I leave the non-breaking stuff (like > > > shadow-gmaps or ucontrol) for the LTO. > > > > I will likely take 12-21 for the next merge window so that we can minimize this > > patch set. sashiko and claude are happy. Mostly mechanical moves. I will review > > those first and might do small fixups myself if necessary. > > Speaking of trimming down the patch set... > > Steffen, can you post patch 1, "vfio: Use file-based reference counting for KVM", > separately? I'd love to get that merged sooner than later. Sent a Spin-off with some improvements: https://lore.kernel.org/all/20260812-vfio-v1-1-5cfe0b1fa4e7@linux.ibm.com/ Steffen