From: Mike Rapoport <rppt@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Harry Yoo (Oracle)" <harry@kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Andrei Vagin <avagin@google.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
David Hildenbrand <david@kernel.org>,
Hugh Dickins <hughd@google.com>,
James Houghton <jthoughton@google.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
"Lorenzo Stoakes (Oracle)" <ljs@kernel.org>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Michal Hocko <mhocko@suse.com>,
Muchun Song <muchun.song@linux.dev>,
Nikita Kalyazin <kalyazin@amazon.com>,
Oscar Salvador <osalvador@suse.de>,
Paolo Bonzini <pbonzini@redhat.com>, Peter Xu <peterx@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Shuah Khan <shuah@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Vlastimil Babka <vbabka@suse.cz>,
kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH v3 02/15] userfaultfd: introduce struct mfill_state
Date: Thu, 2 Apr 2026 07:36:27 +0300 [thread overview]
Message-ID: <ac3yS0F7clWYDptU@kernel.org> (raw)
In-Reply-To: <20260401104449.42123600e33e08b5ebad10a5@linux-foundation.org>
On Wed, Apr 01, 2026 at 10:44:49AM -0700, Andrew Morton wrote:
> On Wed, 1 Apr 2026 10:37:17 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:
>
> > On Wed, 1 Apr 2026 10:36:03 +0300 Mike Rapoport <rppt@kernel.org> wrote:
> >
> > > Here's a fixup (it causes a conflict in patch 4 though).
> > > Andrew, I can send v4 if you prefer.
> >
> > Looks pretty simple. "userfaultfd: introduce mfill_get_vma() and
> > mfill_put_vma()" now leaves things like this:
>
> err, actually, it gets messy.
>
> Can we please have a v4? I think there are a few other things pending?
Sent.
> I've noted
> https://lkml.kernel.org/r/202603311743.uZYPu1Gn-lkp@intel.com
Alice fixed this on the Rust side and the fix is queued to char-misc-linus:
https://lore.kernel.org/all/CAH5fLgg63SYHQ34yqy7o2cA5f2Gh0aNTwTeQkzbWb+kV4Rr3Qw@mail.gmail.com
> https://lkml.kernel.org/r/acqrtd7E6UxrX6Ji@casper.infradead.org
We've been through this since Peter's first posting and I think there's a
consensus about necessity of vm_uffd_ops and the argument was about what
exact API they should have.
--
Sincerely yours,
Mike.
next prev parent reply other threads:[~2026-04-02 4:36 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-30 10:11 [PATCH v3 00/15] mm, kvm: allow uffd support in guest_memfd Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 01/15] userfaultfd: introduce mfill_copy_folio_locked() helper Mike Rapoport
2026-03-31 3:33 ` Harry Yoo (Oracle)
2026-03-30 10:11 ` [PATCH v3 02/15] userfaultfd: introduce struct mfill_state Mike Rapoport
2026-03-31 7:03 ` Harry Yoo (Oracle)
2026-03-31 14:32 ` Mike Rapoport
2026-03-31 15:24 ` Harry Yoo (Oracle)
2026-04-01 7:36 ` Mike Rapoport
2026-04-01 17:37 ` Andrew Morton
2026-04-01 17:44 ` Andrew Morton
2026-04-02 4:36 ` Mike Rapoport [this message]
2026-03-30 10:11 ` [PATCH v3 03/15] userfaultfd: introduce mfill_establish_pmd() helper Mike Rapoport
2026-03-31 7:50 ` Harry Yoo (Oracle)
2026-03-30 10:11 ` [PATCH v3 04/15] userfaultfd: introduce mfill_get_vma() and mfill_put_vma() Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 05/15] userfaultfd: retry copying with locks dropped in mfill_atomic_pte_copy() Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 06/15] userfaultfd: move vma_can_userfault out of line Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 07/15] userfaultfd: introduce vm_uffd_ops Mike Rapoport
2026-03-30 16:58 ` Matthew Wilcox
2026-03-31 11:42 ` Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 08/15] shmem, userfaultfd: use a VMA callback to handle UFFDIO_CONTINUE Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 09/15] userfaultfd: introduce vm_uffd_ops->alloc_folio() Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 10/15] shmem, userfaultfd: implement shmem uffd operations using vm_uffd_ops Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 11/15] userfaultfd: mfill_atomic(): remove retry logic Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 12/15] mm: generalize handling of userfaults in __do_fault() Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 13/15] KVM: guest_memfd: implement userfaultfd operations Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 14/15] KVM: selftests: test userfaultfd minor for guest_memfd Mike Rapoport
2026-03-30 10:11 ` [PATCH v3 15/15] KVM: selftests: test userfaultfd missing " Mike Rapoport
2026-03-30 19:54 ` [PATCH v3 00/15] mm, kvm: allow uffd support in guest_memfd Andrew Morton
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