From: Andrew Morton <akpm@linux-foundation.org>
To: Gregory Price <gourry@gourry.net>
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, david@kernel.org, mst@redhat.com,
jasowang@redhat.com, xuanzhuo@linux.alibaba.com,
eperezma@redhat.com, osalvador@suse.de
Subject: Re: [PATCH] dax/kmem: add build config for protected dax memory blocks
Date: Tue, 27 Jan 2026 13:34:31 -0800 [thread overview]
Message-ID: <20260127133431.671e4605eee807abe84f92f4@linux-foundation.org> (raw)
In-Reply-To: <20260115024222.3486455-1-gourry@gourry.net>
On Wed, 14 Jan 2026 21:42:22 -0500 Gregory Price <gourry@gourry.net> wrote:
> Since this protection may break userspace tools, it should
> be an opt-in until those tools have time to update to the
> new daxN.M/hotplug interface instead of memory blocks.
>
> --- a/drivers/dax/Kconfig
> +++ b/drivers/dax/Kconfig
> @@ -78,4 +78,22 @@ config DEV_DAX_KMEM
>
> Say N if unsure.
>
> +config DEV_DAX_KMEM_PROTECTED
Users must rebuild and redeploy kernels after having updated a
userspace tool. They won't thank us for this ;)
Isn't there something we can do to make this feature
backward-compatible?
next prev parent reply other threads:[~2026-01-27 21:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-14 23:50 [PATCH v2 0/5] add runtime hotplug state control Gregory Price
2026-01-14 23:50 ` [PATCH v2 1/5] mm/memory_hotplug: pass online_type to online_memory_block() via arg Gregory Price
2026-01-14 23:50 ` [PATCH v2 2/5] mm/memory_hotplug: add 'online_type' argument to add_memory_driver_managed Gregory Price
2026-01-14 23:50 ` [PATCH v2 3/5] dax/kmem: extract hotplug/hotremove helper functions Gregory Price
2026-01-14 23:50 ` [PATCH v2 4/5] dax/kmem: add sysfs interface for runtime hotplug state control Gregory Price
2026-01-27 21:31 ` Andrew Morton
2026-01-14 23:50 ` [PATCH v2 5/5] dax/kmem: add memory notifier to block external state changes Gregory Price
2026-01-15 2:42 ` [PATCH] dax/kmem: add build config for protected dax memory blocks Gregory Price
2026-01-27 21:34 ` Andrew Morton [this message]
2026-01-27 21:42 ` Gregory Price
2026-01-15 17:26 ` [PATCH v2 0/5] add runtime hotplug state control David Hildenbrand (Red Hat)
2026-01-15 17:42 ` Gregory Price
2026-01-15 17:46 ` David Hildenbrand (Red Hat)
-- strict thread matches above, loose matches on Subject: below --
2025-11-13 14:58 [PATCH] memory-tiers: multi-definition fixup Gregory Price
2026-01-15 2:38 ` [PATCH] dax/kmem: add build config for protected dax memory blocks Gregory Price
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