From: "David Hildenbrand (Arm)" <david@kernel•org>
To: Jordan Niethe <jniethe@nvidia•com>, linux-mm@kvack•org
Cc: balbirs@nvidia•com, matthew.brost@intel•com,
akpm@linux-foundation•org, linux-kernel@vger•kernel.org,
dri-devel@lists•freedesktop.org, ziy@nvidia•com,
apopple@nvidia•com, lorenzo.stoakes@oracle•com, lyude@redhat•com,
dakr@kernel•org, airlied@gmail•com, simona@ffwll•ch,
rcampbell@nvidia•com, mpenttil@redhat•com, jgg@nvidia•com,
willy@infradead•org, linuxppc-dev@lists•ozlabs.org,
intel-xe@lists•freedesktop.org, jgg@ziepe•ca,
Felix.Kuehling@amd•com, jhubbard@nvidia•com, maddy@linux•ibm.com,
mpe@ellerman•id.au, ying.huang@linux•alibaba.com
Subject: Re: [PATCH v6 01/13] mm/migrate_device: Introduce migrate_pfn_from_page() helper
Date: Fri, 27 Feb 2026 22:11:00 +0100 [thread overview]
Message-ID: <9ee22635-a219-47bb-a397-bc4e141b408d@kernel.org> (raw)
In-Reply-To: <20260202113642.59295-2-jniethe@nvidia.com>
On 2/2/26 12:36, Jordan Niethe wrote:
> To create a migrate entry from a given struct page, that page is first
> converted to its pfn, before passing the pfn to migrate_pfn().
>
> A future change will remove device private pages from the physical
> address space. This will mean that device private pages no longer have a
> pfn and must be handled separately.
>
> Prepare for this with a new helper:
>
> - migrate_pfn_from_page()
>
> This helper takes a struct page as parameter instead of a pfn. This will
> allow more flexibility for handling the mpfn differently for device
> private pages.
>
> Reviewed-by: Balbir Singh <balbirs@nvidia•com>
> Acked-by: Felix Kuehling <felix.kuehling@amd•com>
> Signed-off-by: Jordan Niethe <jniethe@nvidia•com>
> ---
Acked-by: David Hildenbrand (Arm) <david@kernel•org>
--
Cheers,
David
next prev parent reply other threads:[~2026-02-27 21:11 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-02 11:36 [PATCH v6 00/13] Remove device private pages from physical address space Jordan Niethe
2026-02-02 11:36 ` [PATCH v6 01/13] mm/migrate_device: Introduce migrate_pfn_from_page() helper Jordan Niethe
2026-02-27 21:11 ` David Hildenbrand (Arm) [this message]
2026-03-01 23:38 ` Jordan Niethe
2026-03-02 9:22 ` David Hildenbrand (Arm)
2026-03-03 5:52 ` Jordan Niethe
2026-03-03 16:32 ` David Hildenbrand (Arm)
2026-02-02 11:36 ` [PATCH v6 02/13] drm/amdkfd: Use migrate pfns internally Jordan Niethe
2026-03-03 16:40 ` David Hildenbrand (Arm)
2026-02-02 11:36 ` [PATCH v6 03/13] mm/migrate_device: Make migrate_device_{pfns,range}() take mpfns Jordan Niethe
2026-03-03 16:52 ` David Hildenbrand (Arm)
2026-02-02 11:36 ` [PATCH v6 04/13] mm/migrate_device: Add migrate PFN flag to track device private pages Jordan Niethe
2026-03-03 16:58 ` David Hildenbrand (Arm)
2026-02-02 11:36 ` [PATCH v6 05/13] mm/page_vma_mapped: Add flag to page_vma_mapped_walk::flags " Jordan Niethe
2026-03-06 15:44 ` David Hildenbrand (Arm)
2026-03-20 4:57 ` Alistair Popple
2026-03-23 20:03 ` David Hildenbrand (Arm)
2026-02-02 11:36 ` [PATCH v6 06/13] mm: Add helpers to create migration entries from struct pages Jordan Niethe
2026-03-06 15:59 ` David Hildenbrand (Arm)
2026-02-02 11:36 ` [PATCH v6 07/13] mm: Add a new swap type for migration entries of device private pages Jordan Niethe
2026-02-02 11:36 ` [PATCH v6 08/13] mm: Add softleaf support for device private migration entries Jordan Niethe
2026-02-02 11:36 ` [PATCH v6 09/13] mm: Begin creating " Jordan Niethe
2026-02-02 11:36 ` [PATCH v6 10/13] mm: Add helpers to create device private entries from struct pages Jordan Niethe
2026-02-02 11:36 ` [PATCH v6 11/13] mm/util: Add flag to track device private pages in page snapshots Jordan Niethe
2026-03-06 16:02 ` David Hildenbrand (Arm)
2026-03-06 16:03 ` David Hildenbrand (Arm)
2026-02-02 11:36 ` [PATCH v6 12/13] mm/hmm: Add flag to track device private pages Jordan Niethe
2026-03-06 16:05 ` David Hildenbrand (Arm)
2026-02-02 11:36 ` [PATCH v6 13/13] mm: Remove device private pages from the physical address space Jordan Niethe
2026-03-06 16:11 ` David Hildenbrand (Arm)
2026-02-06 13:08 ` [PATCH v6 00/13] Remove device private pages from " David Hildenbrand (Arm)
2026-03-06 16:16 ` David Hildenbrand (Arm)
2026-03-17 1:47 ` Alistair Popple
2026-03-18 8:44 ` David Hildenbrand (Arm)
2026-03-20 5:52 ` Alistair Popple
2026-03-23 20:10 ` David Hildenbrand (Arm)
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