linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
From: Gregory Price <gourry@gourry.net>
To: Alistair Popple <apopple@nvidia.com>
Cc: lsf-pc@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-cxl@vger.kernel.org, cgroups@vger.kernel.org,
	linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org,
	damon@lists.linux.dev, kernel-team@meta.com,
	gregkh@linuxfoundation.org, rafael@kernel.org, dakr@kernel.org,
	dave@stgolabs.net, jonathan.cameron@huawei.com,
	dave.jiang@intel.com, alison.schofield@intel.com,
	vishal.l.verma@intel.com, ira.weiny@intel.com,
	dan.j.williams@intel.com, longman@redhat.com,
	akpm@linux-foundation.org, david@kernel.org,
	lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com,
	vbabka@suse.cz, rppt@kernel.org, surenb@google.com,
	mhocko@suse.com, osalvador@suse.de, ziy@nvidia.com,
	matthew.brost@intel.com, joshua.hahnjy@gmail.com,
	rakie.kim@sk.com, byungchul@sk.com, ying.huang@linux.alibaba.com,
	axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com,
	yury.norov@gmail.com, linux@rasmusvillemoes.dk,
	mhiramat@kernel.org, mathieu.desnoyers@efficios.com,
	tj@kernel.org, hannes@cmpxchg.org, mkoutny@suse.com,
	jackmanb@google.com, sj@kernel.org,
	baolin.wang@linux.alibaba.com, npache@redhat.com,
	ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org,
	lance.yang@linux.dev, muchun.song@linux.dev, xu.xin16@zte.com.cn,
	chengming.zhou@linux.dev, jannh@google.com, linmiaohe@huawei.com,
	nao.horiguchi@gmail.com, pfalcato@suse.de, rientjes@google.com,
	shakeel.butt@linux.dev, riel@surriel.com, harry.yoo@oracle.com,
	cl@gentwo.org, roman.gushchin@linux.dev, chrisl@kernel.org,
	kasong@tencent.com, shikemeng@huaweicloud.com, nphamcs@gmail.com,
	bhe@redhat.com, zhengqi.arch@bytedance.com, terry.bowman@amd.com
Subject: Re: [LSF/MM/BPF TOPIC][RFC PATCH v4 00/27] Private Memory Nodes (w/ Compressed RAM)
Date: Tue, 24 Feb 2026 11:54:52 -0500	[thread overview]
Message-ID: <aZ3X3Jni0HZXZMVl@gourry-fedora-PF4VCD3F> (raw)
In-Reply-To: <aZ3BEn_73Rk8Fn7L@gourry-fedora-PF4VCD3F>

On Tue, Feb 24, 2026 at 10:17:38AM -0500, Gregory Price wrote:
>    - Changing validations on node states
>      - mempolicy checks N_MEMORY membership, so you have to hack
>        N_MEMORY onto ZONE_DEVICE
>        (or teach it about a new node state... N_MEMORY_PRIVATE)
> 

This gave me something to chew on

I think this can be done without introducing N_MEMORY_PRIVATE and just
checking:   NODE_DATA(target_nid)->private

meaning these nodes can just be N_MEMORY with the same isolations.

I'll look at this a bit more.

~Gregory


      reply	other threads:[~2026-02-24 16:55 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-22  8:48 Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 01/27] numa: introduce N_MEMORY_PRIVATE node state Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 02/27] mm,cpuset: gate allocations from N_MEMORY_PRIVATE behind __GFP_PRIVATE Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 03/27] mm/page_alloc: add numa_zone_allowed() and wire it up Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 04/27] mm/page_alloc: Add private node handling to build_zonelists Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 05/27] mm: introduce folio_is_private_managed() unified predicate Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 06/27] mm/mlock: skip mlock for managed-memory folios Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 07/27] mm/madvise: skip madvise " Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 08/27] mm/ksm: skip KSM " Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 09/27] mm/khugepaged: skip private node folios when trying to collapse Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 10/27] mm/swap: add free_folio callback for folio release cleanup Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 11/27] mm/huge_memory.c: add private node folio split notification callback Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 12/27] mm/migrate: NP_OPS_MIGRATION - support private node user migration Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 13/27] mm/mempolicy: NP_OPS_MEMPOLICY - support private node mempolicy Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 14/27] mm/memory-tiers: NP_OPS_DEMOTION - support private node demotion Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 15/27] mm/mprotect: NP_OPS_PROTECT_WRITE - gate PTE/PMD write-upgrades Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 16/27] mm: NP_OPS_RECLAIM - private node reclaim participation Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 17/27] mm/oom: NP_OPS_OOM_ELIGIBLE - private node OOM participation Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 18/27] mm/memory: NP_OPS_NUMA_BALANCING - private node NUMA balancing Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 19/27] mm/compaction: NP_OPS_COMPACTION - private node compaction support Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 20/27] mm/gup: NP_OPS_LONGTERM_PIN - private node longterm pin support Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 21/27] mm/memory-failure: add memory_failure callback to node_private_ops Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 22/27] mm/memory_hotplug: add add_private_memory_driver_managed() Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 23/27] mm/cram: add compressed ram memory management subsystem Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 24/27] cxl/core: Add cxl_sysram region type Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 25/27] cxl/core: Add private node support to cxl_sysram Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 26/27] cxl: add cxl_mempolicy sample PCI driver Gregory Price
2026-02-22  8:48 ` [RFC PATCH v4 27/27] cxl: add cxl_compression " Gregory Price
2026-02-23 13:07 ` [LSF/MM/BPF TOPIC][RFC PATCH v4 00/27] Private Memory Nodes (w/ Compressed RAM) David Hildenbrand (Arm)
2026-02-23 14:54   ` Gregory Price
2026-02-23 16:08     ` Gregory Price
2026-02-24  6:19 ` Alistair Popple
2026-02-24 15:17   ` Gregory Price
2026-02-24 16:54     ` Gregory Price [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=aZ3X3Jni0HZXZMVl@gourry-fedora-PF4VCD3F \
    --to=gourry@gourry.net \
    --cc=Liam.Howlett@oracle.com \
    --cc=akpm@linux-foundation.org \
    --cc=alison.schofield@intel.com \
    --cc=apopple@nvidia.com \
    --cc=axelrasmussen@google.com \
    --cc=baohua@kernel.org \
    --cc=baolin.wang@linux.alibaba.com \
    --cc=bhe@redhat.com \
    --cc=byungchul@sk.com \
    --cc=cgroups@vger.kernel.org \
    --cc=chengming.zhou@linux.dev \
    --cc=chrisl@kernel.org \
    --cc=cl@gentwo.org \
    --cc=dakr@kernel.org \
    --cc=damon@lists.linux.dev \
    --cc=dan.j.williams@intel.com \
    --cc=dave.jiang@intel.com \
    --cc=dave@stgolabs.net \
    --cc=david@kernel.org \
    --cc=dev.jain@arm.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=hannes@cmpxchg.org \
    --cc=harry.yoo@oracle.com \
    --cc=ira.weiny@intel.com \
    --cc=jackmanb@google.com \
    --cc=jannh@google.com \
    --cc=jonathan.cameron@huawei.com \
    --cc=joshua.hahnjy@gmail.com \
    --cc=kasong@tencent.com \
    --cc=kernel-team@meta.com \
    --cc=lance.yang@linux.dev \
    --cc=linmiaohe@huawei.com \
    --cc=linux-cxl@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-trace-kernel@vger.kernel.org \
    --cc=linux@rasmusvillemoes.dk \
    --cc=longman@redhat.com \
    --cc=lorenzo.stoakes@oracle.com \
    --cc=lsf-pc@lists.linux-foundation.org \
    --cc=mathieu.desnoyers@efficios.com \
    --cc=matthew.brost@intel.com \
    --cc=mhiramat@kernel.org \
    --cc=mhocko@suse.com \
    --cc=mkoutny@suse.com \
    --cc=muchun.song@linux.dev \
    --cc=nao.horiguchi@gmail.com \
    --cc=npache@redhat.com \
    --cc=nphamcs@gmail.com \
    --cc=osalvador@suse.de \
    --cc=pfalcato@suse.de \
    --cc=rafael@kernel.org \
    --cc=rakie.kim@sk.com \
    --cc=riel@surriel.com \
    --cc=rientjes@google.com \
    --cc=roman.gushchin@linux.dev \
    --cc=rppt@kernel.org \
    --cc=ryan.roberts@arm.com \
    --cc=shakeel.butt@linux.dev \
    --cc=shikemeng@huaweicloud.com \
    --cc=sj@kernel.org \
    --cc=surenb@google.com \
    --cc=terry.bowman@amd.com \
    --cc=tj@kernel.org \
    --cc=vbabka@suse.cz \
    --cc=vishal.l.verma@intel.com \
    --cc=weixugc@google.com \
    --cc=xu.xin16@zte.com.cn \
    --cc=ying.huang@linux.alibaba.com \
    --cc=yuanchu@google.com \
    --cc=yury.norov@gmail.com \
    --cc=zhengqi.arch@bytedance.com \
    --cc=ziy@nvidia.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox