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Mon, 1 Jun 2026 10:08:27 -0400 (EDT) Date: Mon, 1 Jun 2026 15:08:19 +0100 From: Kiryl Shutsemau To: Mike Rapoport Cc: Lorenzo Stoakes , akpm@linux-foundation.org, peterx@redhat.com, david@kernel.org, surenb@google.com, vbabka@kernel.org, Liam.Howlett@oracle.com, ziy@nvidia.com, corbet@lwn.net, skhan@linuxfoundation.org, seanjc@google.com, pbonzini@redhat.com, jthoughton@google.com, aarcange@redhat.com, sj@kernel.org, usama.arif@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, kvm@vger.kernel.org, kernel-team@meta.com, stable@vger.kernel.org Subject: Re: [PATCH v5 04/18] mm: skip out-of-range bits in mk_vma_flags() Message-ID: References: <20260526130509.2748441-1-kirill@shutemov.name> <20260526130509.2748441-5-kirill@shutemov.name> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Sat, May 30, 2026 at 07:52:25PM +0300, Mike Rapoport wrote: > I have a PoC of yet another alternative: > > https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git/log/?h=uffd/vm-flags > > The idea there is to keep a single VMA flag, VMA_UFFD_BIT/VM_UFFD and move > all the rest into what's now struct vm_userfaultfd_ctx. Nice! I assume it can go on top what I did, right? -- Kiryl Shutsemau / Kirill A. Shutemov