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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768499216; bh=1jCsql1xPHh3+qu35hlAhhhfPTnN6RZGCJEvT2TxyM4=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=KFP1W6x/Pz3GfQ7syb6LWx01LhNQFu7ZunbJ85ZxOyaZjBUduvM7RCWvy4LTQGegz O8Oma9KSnm785HJoUpbeHBFJeNzZCPLriM43cPmWAPAxTYA2Y3UpPACogejUfAgTO2 D2JTivRHZJ7aac7xUGG2udcTzxcFKpDVs7GpY537HdJES86/qV9wF+Gf6PbyNyi343 7Ovh20HYPAd7Eeu1HxthMVtKbomE3KivtlKMrG+Tj1LY0srLIg+joNxkjE0lBv/ILn Jlxx3sIfJI3gAaA0oBQqM7XiOGxA/wY7ZdDyXhDn3HXr+ENe5JWj3tFrwD3zznzvBX XpgJmsyo45Vyg== Message-ID: Date: Thu, 15 Jan 2026 18:46:50 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/5] add runtime hotplug state control To: Gregory Price Cc: linux-mm@kvack.org, linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, kernel-team@meta.com, dan.j.williams@intel.com, vishal.l.verma@intel.com, dave.jiang@intel.com, mst@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, osalvador@suse.de, akpm@linux-foundation.org References: <20260114235022.3437787-1-gourry@gourry.net> From: "David Hildenbrand (Red Hat)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: usfew1jodf8zpejcfo77z3mcbt3ethgu X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: C9E14C0008 X-HE-Tag: 1768499217-912279 X-HE-Meta: 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 cz/PppOg ndLV4QiyPtb6Ml1VxPexHsBhGbLblkYCgU7rVsxAlIFnFEfr041P9QKJxgHWoSJZhg7uvasUIstAkrpq4Op0t7ZDaC5wy/0RWZR56XI1YKRCMGVO6u6v5wxIEQIP9ws3XVfC8beN4vCbCUEU3t3AtJepglzSNzSufnExLmyorgSzg5Gj8MeWbwbZECu8TjGQDppiKjSx4m8Utcitptu19nRgsUyK8XqX28lwl0Ks38oIarrADfP1fwVhi7b0XF2K+zC/x 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 1/15/26 18:42, Gregory Price wrote: > On Thu, Jan 15, 2026 at 06:26:21PM +0100, David Hildenbrand (Red Hat) wrote: >> On 1/15/26 00:50, Gregory Price wrote: >>> The dax kmem driver currently onlines memory automatically during >>> probe using the system's default online policy but provides no way >>> to control or query the entire region state at runtime. >>> >>> This series adds a sysfs interface to control DAX kmem memory >>> hotplug state, and refactors the memory_hotplug paths to make it >>> possible for drivers to request an online type at hotplug time. >> >> Gregory, slow down a bit please. I haven't even had the chance to go through >> your replies on v1. >> > > Sorry, i realized your feedback on v1 showed there was just too much > complexity. I would ignore v1 entirely at this point, this version is > significantly simpler. Fair enough, I can see that the complexity here is likely reduced (less patches! ). > >> I'm currently on PTO and don't have the full day to review stuff :) And boy >> oh boy, do I have a lot of stuff in my inbox. >> >> Maybe given this is the second time the patch subject is suboptimal is >> another sign to slow down a bit? :P >> > > Apologies, and I will let this one sit. Yes, at least wait until I had the chance to reply :) -- Cheers David