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Wed, 30 Oct 2024 10:04:20 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AF22D20082; Wed, 30 Oct 2024 10:04:20 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6C1A62007F; Wed, 30 Oct 2024 10:04:20 +0000 (GMT) Received: from osiris (unknown [9.152.212.60]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTPS; Wed, 30 Oct 2024 10:04:20 +0000 (GMT) Date: Wed, 30 Oct 2024 11:04:18 +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 , Mario Casquero Subject: Re: [PATCH v3 3/7] s390/physmem_info: query diag500(STORAGE LIMIT) to support QEMU/KVM memory devices Message-ID: <20241030100418.6264-I-hca@linux.ibm.com> References: <20241025141453.1210600-1-david@redhat.com> <20241025141453.1210600-4-david@redhat.com> <20241030092324.6264-E-hca@linux.ibm.com> <35fc960b-0013-4264-93d6-6511d54ab474@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <35fc960b-0013-4264-93d6-6511d54ab474@redhat.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: jMpsSJ9u4VEsnQ5qhNnomQE2ssfMG_fY X-Proofpoint-ORIG-GUID: qENfN970vDa7Liz-_CUTkjbzzRihWYNV 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 malwarescore=0 priorityscore=1501 impostorscore=0 suspectscore=0 lowpriorityscore=0 mlxscore=0 clxscore=1015 phishscore=0 adultscore=0 spamscore=0 bulkscore=0 mlxlogscore=593 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410300076 X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: F23AD40012 X-Stat-Signature: jnfdir4h5keu5y58khmopikfz79bz93w X-Rspam-User: X-HE-Tag: 1730282635-398687 X-HE-Meta: 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 35A2+xY0 1pd5JkCpFbJWiX3x+8xI7gtfuXIqaXbm49UicxgkWkGBCsNU0PlLZHtDIaFd+eWOvbTQ/C4pq933ro8fkg53XNMKn+9aKqwOFSr3T0Pk4MkGu29wOCa1WuiBdu41QJ5iKnfFq3GNHR5hedkpJ9Ll+t2wKFmOAfIgD3trtQEO2OboTWyRRdfbo8bsqhTShupk/giI9rhcNP+FKq8UqV5lFg6FGCzpPAS5vJBMorXEZ+uuEFzTvF92zgUckHBuy4dTNkRSePhoQNCp2t4g= 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 Wed, Oct 30, 2024 at 10:42:05AM +0100, David Hildenbrand wrote: > On 30.10.24 10:23, Heiko Carstens wrote: > > Looks like I couldn't convince you to implement a query subcode. > > Well, you convinced me that it might be useful, but after waiting on > feedback from the KVM folks ... which didn't happen I moved on. In the cover > letter I have "No query function for diag500 for now." > > My thinking was that if we go for a query subcode, maybe we'd start "anew" > with a new diag and use "0=query" like all similar instructions I am aware > of. And that is then a bigger rework ... > > ... and I am not particularly interested in extra work without a clear > statement from KVM people what (a) if that work is required and; (b) what it > should look like. Yes, it is all good. Let's just move on.