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Wed, 30 Oct 2024 09:34:55 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6FC9E2004B; Wed, 30 Oct 2024 09:34:55 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1E74F20040; Wed, 30 Oct 2024 09:34:55 +0000 (GMT) Received: from osiris (unknown [9.152.212.60]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTPS; Wed, 30 Oct 2024 09:34:55 +0000 (GMT) Date: Wed, 30 Oct 2024 10:34:53 +0100 From: Heiko Carstens To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, virtualization@lists.linux.dev, linux-doc@vger.kernel.org, kvm@vger.kernel.org, Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Huth , Cornelia Huck , Janosch Frank , Claudio Imbrenda , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , Eugenio =?iso-8859-1?Q?P=E9rez?= , Eric Farman , Andrew Morton , Jonathan Corbet Subject: Re: [PATCH v3 0/7] virtio-mem: s390 support Message-ID: <20241030093453.6264-H-hca@linux.ibm.com> References: <20241025141453.1210600-1-david@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241025141453.1210600-1-david@redhat.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: RJmLhjYk0o0VpS1HltgmETm6DAOC35nw X-Proofpoint-GUID: tBAswqFNk76bAn1jDNlPMUI8PjC9pDN0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 adultscore=0 phishscore=0 bulkscore=0 mlxlogscore=615 impostorscore=0 spamscore=0 suspectscore=0 mlxscore=0 malwarescore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410300072 X-Rspamd-Queue-Id: 223ED100016 X-Stat-Signature: r3sx77a6epkxfrfyufauj7j9qgcwbit9 X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1730280872-226812 X-HE-Meta: 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 d1V+KC5K d6x9z600P2iaeWqa9L/RB3UUFpjU7ILNap0k10/SM/+o0UP9oKotNCob3LiPk7J/lFrGEY+t4sslxNJCk7Xkscivd4gbhgPMXh42Gob0r91cTMPh/anqWD7DlnRFnrx/IajGGswDmKFYFLX/fCSP2MEnyV2YNOy3Y9sgcyUrGI0q1CfCnyUu1St7rMg7OLPyVm3FbDeDZ3imxXtBZ7Cteas5KeNqGK76TxCs+QhjkUmq2EdgFi6lzRkOC8ReVaOCiYUOV6lSWqRui4nDfMgcckUZkQzAFAluz3GRHFwBDKBnUSu7lXNyHyUKLDXJXVVMPidpB X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Oct 25, 2024 at 04:14:45PM +0200, David Hildenbrand wrote: > Let's finally add s390 support for virtio-mem; my last RFC was sent > 4 years ago, and a lot changed in the meantime. > > The latest QEMU series is available at [1], which contains some more > details and a usage example on s390 (last patch). > > There is not too much in here: The biggest part is querying a new diag(500) > STORAGE_LIMIT hypercall to obtain the proper "max_physmem_end". ... > David Hildenbrand (7): > Documentation: s390-diag.rst: make diag500 a generic KVM hypercall > Documentation: s390-diag.rst: document diag500(STORAGE LIMIT) > subfunction > s390/physmem_info: query diag500(STORAGE LIMIT) to support QEMU/KVM > memory devices > virtio-mem: s390 support > lib/Kconfig.debug: default STRICT_DEVMEM to "y" on s390 > s390/sparsemem: reduce section size to 128 MiB > s390/sparsemem: provide memory_add_physaddr_to_nid() with CONFIG_NUMA > > Documentation/virt/kvm/s390/s390-diag.rst | 35 +++++++++++++---- > arch/s390/boot/physmem_info.c | 47 ++++++++++++++++++++++- > arch/s390/boot/startup.c | 7 +++- > arch/s390/include/asm/physmem_info.h | 3 ++ > arch/s390/include/asm/sparsemem.h | 10 ++++- > drivers/virtio/Kconfig | 12 +++--- > lib/Kconfig.debug | 2 +- > 7 files changed, 98 insertions(+), 18 deletions(-) I'll apply the whole series as soon as there are ACKs for the third patch, and from the KVM guys for the whole series. Christian, Janosch, Claudio?