From: David Hildenbrand <david@redhat.com>
To: Peter Xu <peterx@redhat.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
kvm@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Alex Williamson <alex.williamson@redhat.com>,
Zi Yan <ziy@nvidia.com>, Jason Gunthorpe <jgg@nvidia.com>,
Alex Mastro <amastro@fb.com>, Nico Pache <npache@redhat.com>
Subject: Re: [PATCH 4/5] vfio: Introduce vfio_device_ops.get_unmapped_area hook
Date: Fri, 13 Jun 2025 20:03:32 +0200 [thread overview]
Message-ID: <a47f33d3-fe50-4e4e-871b-bddc99a27264@redhat.com> (raw)
In-Reply-To: <20250613134111.469884-5-peterx@redhat.com>
On 13.06.25 15:41, Peter Xu wrote:
> Add a hook to vfio_device_ops to allow sub-modules provide virtual
> addresses for an mmap() request.
>
> Note that the fallback will be mm_get_unmapped_area(), which should
> maintain the old behavior of generic VA allocation (__get_unmapped_area).
> It's a bit unfortunate that is needed, as the current get_unmapped_area()
> file ops cannot support a retval which fallbacks to the default. So that
> is needed both here and whenever sub-module will opt-in with its own.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
Reviewed-by: David Hildenbrand <david@redhat.com>
--
Cheers,
David / dhildenb
next prev parent reply other threads:[~2025-06-13 18:03 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-13 13:41 [PATCH 0/5] mm/vfio: huge pfnmaps with !MAP_FIXED mappings Peter Xu
2025-06-13 13:41 ` [PATCH 1/5] mm: Deduplicate mm_get_unmapped_area() Peter Xu
2025-06-13 14:12 ` Jason Gunthorpe
2025-06-13 14:55 ` Oscar Salvador
2025-06-13 14:58 ` Zi Yan
2025-06-13 15:57 ` Lorenzo Stoakes
2025-06-13 17:00 ` Pedro Falcato
2025-06-13 18:00 ` David Hildenbrand
2025-06-16 8:01 ` David Laight
2025-06-17 21:13 ` Peter Xu
2025-06-13 13:41 ` [PATCH 2/5] mm/hugetlb: Remove prepare_hugepage_range() Peter Xu
2025-06-13 14:12 ` Jason Gunthorpe
2025-06-13 14:59 ` Oscar Salvador
2025-06-13 15:13 ` Zi Yan
2025-06-13 16:24 ` Peter Xu
2025-06-13 18:01 ` David Hildenbrand
2025-06-14 4:11 ` Liam R. Howlett
2025-06-17 21:07 ` Peter Xu
2025-06-13 13:41 ` [PATCH 3/5] mm: Rename __thp_get_unmapped_area to mm_get_unmapped_area_aligned Peter Xu
2025-06-13 14:17 ` Jason Gunthorpe
2025-06-13 15:13 ` Peter Xu
2025-06-13 16:00 ` Jason Gunthorpe
2025-06-13 18:31 ` Peter Xu
2025-06-13 15:19 ` Zi Yan
2025-06-13 18:33 ` Peter Xu
2025-06-13 15:36 ` Lorenzo Stoakes
2025-06-13 18:45 ` Peter Xu
2025-06-13 19:18 ` Lorenzo Stoakes
2025-06-13 20:34 ` Peter Xu
2025-06-14 5:58 ` Lorenzo Stoakes
2025-06-14 5:23 ` Liam R. Howlett
2025-06-16 12:14 ` Jason Gunthorpe
2025-06-16 12:20 ` Lorenzo Stoakes
2025-06-16 12:26 ` Jason Gunthorpe
2025-06-13 13:41 ` [PATCH 4/5] vfio: Introduce vfio_device_ops.get_unmapped_area hook Peter Xu
2025-06-13 14:18 ` Jason Gunthorpe
2025-06-13 18:03 ` David Hildenbrand [this message]
2025-06-14 14:46 ` kernel test robot
2025-06-17 15:39 ` Peter Xu
2025-06-17 15:41 ` Jason Gunthorpe
2025-06-17 16:47 ` Peter Xu
2025-06-17 19:39 ` Peter Xu
2025-06-17 19:46 ` Jason Gunthorpe
2025-06-17 20:01 ` Peter Xu
2025-06-17 23:00 ` Jason Gunthorpe
2025-06-17 23:26 ` Peter Xu
2025-06-13 13:41 ` [PATCH 5/5] vfio-pci: Best-effort huge pfnmaps with !MAP_FIXED mappings Peter Xu
2025-06-13 14:29 ` Jason Gunthorpe
2025-06-13 15:26 ` Peter Xu
2025-06-13 16:09 ` Jason Gunthorpe
2025-06-13 19:15 ` Peter Xu
2025-06-13 23:16 ` Jason Gunthorpe
2025-06-16 22:06 ` Peter Xu
2025-06-16 23:00 ` Jason Gunthorpe
2025-06-17 20:56 ` Peter Xu
2025-06-17 23:18 ` Jason Gunthorpe
2025-06-17 23:36 ` Peter Xu
2025-06-18 16:56 ` Peter Xu
2025-06-18 17:46 ` Jason Gunthorpe
2025-06-18 19:15 ` Peter Xu
2025-06-19 13:58 ` Jason Gunthorpe
2025-06-19 14:55 ` Peter Xu
2025-06-19 18:40 ` Jason Gunthorpe
2025-06-24 20:37 ` Peter Xu
2025-06-24 20:51 ` Peter Xu
2025-06-24 23:40 ` Jason Gunthorpe
2025-06-25 0:48 ` Peter Xu
2025-06-25 13:07 ` Jason Gunthorpe
2025-06-25 17:12 ` Peter Xu
2025-06-25 18:41 ` Jason Gunthorpe
2025-06-25 19:26 ` Peter Xu
2025-06-30 14:05 ` Jason Gunthorpe
2025-07-02 20:58 ` Peter Xu
2025-07-02 23:32 ` Jason Gunthorpe
2025-06-13 18:09 ` David Hildenbrand
2025-06-13 19:21 ` Peter Xu
[not found] ` <20250613174442.1589882-1-amastro@fb.com>
2025-06-13 18:53 ` Peter Xu
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