From: Jason Gunthorpe <jgg@nvidia.com>
To: Shuai Xue <xueshuai@linux.alibaba.com>
Cc: ankita@nvidia.com, aniketa@nvidia.com, vsethi@nvidia.com,
mochs@nvidia.com, skolothumtho@nvidia.com, linmiaohe@huawei.com,
nao.horiguchi@gmail.com, akpm@linux-foundation.org,
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 v3 1/3] mm: handle poisoning of pfn without struct pages
Date: Fri, 24 Oct 2025 08:52:01 -0300 [thread overview]
Message-ID: <20251024115201.GD847003@nvidia.com> (raw)
In-Reply-To: <d2550489-834c-4dcd-b41f-d22590880343@linux.alibaba.com>
On Fri, Oct 24, 2025 at 05:45:45PM +0800, Shuai Xue wrote:
> Rather than having MM maintain metadata about these PFNs, have you
> considered adding an operation callback similar to
> dev_pagemap_ops->memory_failure?
I think someone could come with such a proposal on top of this, it
would not be hard to add some ops to pfn_address_space and have the
code call them instead of using the address_space.
This version just needs to link into the existing VMA machinery (ie
collect_procs_pfn), it doesn't make alot of sense to push that work
into drivers.
Jason
next prev parent reply other threads:[~2025-10-24 11:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-21 10:23 [PATCH v3 0/3] mm: Implement ECC handling for pfn with no struct page ankita
2025-10-21 10:23 ` [PATCH v3 1/3] mm: handle poisoning of pfn without struct pages ankita
2025-10-21 17:05 ` Ira Weiny
2025-10-22 16:00 ` Jiaqi Yan
2025-10-24 6:34 ` Miaohe Lin
2025-10-24 9:45 ` Shuai Xue
2025-10-24 11:52 ` Jason Gunthorpe [this message]
2025-10-24 11:59 ` Ankit Agrawal
2025-10-21 10:23 ` [PATCH v3 2/3] mm: Change ghes code to allow poison of non-struct pfn ankita
2025-10-21 17:13 ` Ira Weiny
2025-10-21 17:19 ` Luck, Tony
2025-10-22 6:53 ` Shuai Xue
2025-10-22 15:03 ` Ira Weiny
2025-10-24 10:03 ` Shuai Xue
2025-10-24 11:26 ` Ankit Agrawal
2025-10-21 10:23 ` [PATCH v3 3/3] vfio/nvgrace-gpu: register device memory for poison handling ankita
2025-10-21 16:30 ` [PATCH v3 0/3] mm: Implement ECC handling for pfn with no struct page Liam R. Howlett
2025-10-21 16:44 ` Jason Gunthorpe
2025-10-21 18:54 ` Liam R. Howlett
2025-10-21 22:38 ` Jason Gunthorpe
2025-10-24 11:16 ` Ankit Agrawal
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