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Tue, 6 Oct 2026 16:18:07 +0000 (GMT) Received: from vela (unknown [9.111.1.151]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 6 Oct 2026 16:18:07 +0000 (GMT) Received: from brueckner by vela with local (Exim 4.99.5) (envelope-from ) id 1xE7ri-00000000wFB-25qK; Tue, 06 Oct 2026 18:18:06 +0200 Date: Tue, 6 Oct 2026 18:18:06 +0200 From: Hendrik Brueckner To: Steffen Eiden Cc: 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 , Christian Borntraeger , 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 , Sean Christopherson , Suzuki K Poulose , Sven Schnelle , Ulrich Weigand , Vasily Gorbik , Will Deacon , Zenghui Yu Subject: Re: [PATCH v9 03/24] KVM: Replace CONFIG_KVM_MMIO with KVM_NO_MMIO Message-ID: References: <20260930173441.66762-1-seiden@linux.ibm.com> <20260930173441.66762-4-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: <20260930173441.66762-4-seiden@linux.ibm.com> Sender: Hendrik Brueckner X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-ORIG-GUID: ZQaIic_21IstwC9g1Aae6xM8uNoUTjIk X-Proofpoint-GUID: -diri8LhwNDbu0AyvUTAhE-ZvbnfI-Pu X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA2MDA2NCBTYWx0ZWRfX48QBrn+w0nnv ewO99Xt9kMPRL6JGRFNvKgKuM8XnKsdfcpp863vOIJe9EpvR7itwurzjVLBgO2jD/zfz3MkVGYP RmKn+ZsooGv8oIrvD52NPtt4VYRMdH0= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA2MDA2NCBTYWx0ZWRfX2/1OhitB30O8 iXws3zZPHfh9D9yMRMC4haXynDtKHZp0nSHk8zuT6WQCpJKVY3GHmrkGzpB8YSrFxyTZ97ujvEZ TERBYrKUHWb1isxboA09YDBuhHzjGQkvB4tooWXRxULAHH252JEwQS3x1OPtrfT45PUUFzxh6le FZoSg0FYos2pzINhuWhbHBmMbBx35oG6U728PXQRNIvXw0m3b2qK+uxahVby7OlIokVvgyy7pTW npWMiyZVbHWFa33d8CBQwJTCBqOEgPt2UdRAMoTiY3wesEJ8y1k/knsBDLNCcRvLegCeh9SiihW kYo6eYV28cIykgYpCU0grkPsxlJ7tbsYjVKRwKrWpKjFBU5e3PDa7gU19raGnYjh+Ar39pL2Hyd EM6jE7JTNrxbzSSjHdRiuzlWxwv1B0T56WTZ6x0cSb4vkvCdjdpb0A66DFgftEpGGzR9dPlIG0n CXxl03Bpzmlnv69Kvlw== X-Authority-Analysis: v=2.4 cv=eYeo7LEH c=1 sm=1 tr=0 ts=6ac51f46 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=kj9zAlcOel0A:10 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=o_ygevbwOlYE398wOkEA:9 a=CjuIK1q_8ugA:10 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=2026-10-06_04,2026-10-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 lowpriorityscore=0 phishscore=0 bulkscore=0 clxscore=1015 spamscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610060064 On Wed, Sep 30, 2026 at 07:34:18PM +0200, Steffen Eiden wrote: > Defining KVM_MMIO is not flexible enough for multi-KVM systems where one > KVM implements MMIO but others do not. Therefore, remove KVM_MMIO from > the config space and use the macro KVM_NO_MMIO instead. > Define KVM_NO_MMIO for KVM/s390 and for selected KVM/powerpc > configurations. > > coalesced_mmio.c is now always compiled&linked. However, for > architectures/configurations defining KVM_NO_MMIO this effectively > collapses to an empty object with no mmio code. > > No functional changes. Changes look good to me. > > Suggested-by: Marc Zyngier > Signed-off-by: Steffen Eiden Thanks! Acked-by: Hendrik Brueckner