From: Andrew Morton <akpm@linux-foundation.org>
To: <ankita@nvidia.com>
Cc: <aniketa@nvidia.com>, <vsethi@nvidia.com>, <jgg@nvidia.com>,
<mochs@nvidia.com>, <skolothumtho@nvidia.com>,
<linmiaohe@huawei.com>, <nao.horiguchi@gmail.com>,
<david@redhat.com>, <lorenzo.stoakes@oracle.com>,
<Liam.Howlett@oracle.com>, <vbabka@suse.cz>, <rppt@kernel.org>,
<surenb@google.com>, <mhocko@suse.com>, <tony.luck@intel.com>,
<bp@alien8.de>, <rafael@kernel.org>, <guohanjun@huawei.com>,
<mchehab@kernel.org>, <lenb@kernel.org>, <kevin.tian@intel.com>,
<alex@shazbot.org>, <cjia@nvidia.com>, <kwankhede@nvidia.com>,
<targupta@nvidia.com>, <zhiw@nvidia.com>, <dnigam@nvidia.com>,
<kjaju@nvidia.com>, <linux-kernel@vger.kernel.org>,
<linux-mm@kvack.org>, <linux-edac@vger.kernel.org>,
<Jonathan.Cameron@huawei.com>, <ira.weiny@intel.com>,
<Smita.KoralahalliChannabasappa@amd.com>,
<u.kleine-koenig@baylibre.com>, <peterz@infradead.org>,
<linux-acpi@vger.kernel.org>, <kvm@vger.kernel.org>
Subject: Re: [PATCH v5 0/3] mm: Implement ECC handling for pfn with no struct page
Date: Mon, 3 Nov 2025 18:47:42 -0800 [thread overview]
Message-ID: <20251103184742.441e98e93c5ed36320c4f41a@linux-foundation.org> (raw)
In-Reply-To: <20251102184434.2406-1-ankita@nvidia.com>
On Sun, 2 Nov 2025 18:44:31 +0000 <ankita@nvidia.com> wrote:
> Poison (or ECC) errors can be very common on a large size cluster.
> The kernel MM currently handles ECC errors / poison only on memory page
> backed by struct page. The handling is currently missing for the PFNMAP
> memory that does not have struct pages. The series adds such support.
>
> Implement a new ECC handling for memory without struct pages. Kernel MM
> expose registration APIs to allow modules that are managing the device
> to register its device memory region. MM then tracks such regions using
> interval tree.
Thanks. My knowledge of this material is weaker than usual :( But the
series looks good to my eye so I'll toss it into mm.git's mm-new branch
for some testing exposure. If that goes OK then I'll later move it
into the mm-unstable branch where it will get linux-next esposure. At
that point I'll monitor reviewer and tester feedback (please).
next prev parent reply other threads:[~2025-11-04 2:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-02 18:44 ankita
2025-11-02 18:44 ` [PATCH v5 1/3] mm: Change ghes code to allow poison of non-struct pfn ankita
2025-11-02 18:44 ` [PATCH v5 2/3] mm: handle poisoning of pfn without struct pages ankita
2025-11-04 2:49 ` Andrew Morton
2025-11-02 18:44 ` [PATCH v5 3/3] vfio/nvgrace-gpu: register device memory for poison handling ankita
2025-11-06 21:56 ` Alex Williamson
2025-11-04 2:47 ` Andrew Morton [this message]
2025-11-04 17:15 ` [PATCH v5 0/3] mm: Implement ECC handling for pfn with no struct page Ankit Agrawal
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