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b=Wzlh+gEPH02pq0GYd3kbFX5f87tKrnkHWpp98MiqGJXFfMQfV/FVfxGStq2n1Icxh at3XXnt4W0X5Z3BEVyZ+zNybdHl56jsrlVGD7IISRFDxSOnOK9tylItg4LH/Dwj+JN zM8zb1dNuY8edXE0P73MWuuL4CLFssFVFp1U4Sg8OXxbrCtiB/PrKmvvzNLjDYkYw4 5zbeCegoitDyNyLbDmk3XOZkd/N+64K6CRKjLX6xsQPRTQq6n7Z4X4PogvYYrswWtq 73U0PUOs0+g4mN0Bd/S/Qg9eEYGHWSjQbpbYkwx8aZUufBfSBBbnWnnukD3AisI5Nl so3vCz59vsOgQ== From: SeongJae Park To: "Kiryl Shutsemau (Meta)" Cc: SeongJae Park , akpm@linux-foundation.org, rppt@kernel.org, peterx@redhat.com, david@kernel.org, ljs@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, 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 Subject: Re: [PATCH v2 02/14] mm: rename uffd-wp PTE bit macros to uffd Date: Fri, 8 May 2026 16:52:05 -0700 Message-ID: <20260508235206.83633-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <4ff3508b951ec4879177dd079003c3fa3af0a444.1778254670.git.kas@kernel.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 7F4101C0005 X-Rspam-User: X-Stat-Signature: yzjssnaecyskeny9s1app71pnfcuteaw X-HE-Tag: 1778284335-830640 X-HE-Meta: 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 YqQ1Kse9 UbWokVoBkds7fF20gb9dU3hZF5RoAqXGhLa5/2P8EsL9pn3Arzvu6OrXDldm/n8YWox2jnP1a2VGSK+K26YQJj6MHZ1UP2O8njh/7oz56E5agXGRdo1d5yIE6CBxIzcHGcMxV5twrzA5vRjIEUjovmHdMQS31ejuq5IF9KACY0y2OOUJySNmQHdfXD2blX71T23sc Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 8 May 2026 16:55:14 +0100 "Kiryl Shutsemau (Meta)" wrote: > The uffd-wp PTE bit is about to gain a second consumer: userfaultfd > RWP will use the same bit to mark access-tracking PTEs, distinct > from mprotect(PROT_NONE) or NUMA-hinting PTEs. WP vs RWP semantics > come from the VMA flag; the bit is just "uffd has claimed this > entry." Drop the "_wp" suffix from the arch-private bit macros so > they reflect that. > > x86: _PAGE_BIT_UFFD_WP -> _PAGE_BIT_UFFD > _PAGE_UFFD_WP -> _PAGE_UFFD > _PAGE_SWP_UFFD_WP -> _PAGE_SWP_UFFD > arm64: PTE_UFFD_WP -> PTE_UFFD > PTE_SWP_UFFD_WP -> PTE_SWP_UFFD > riscv: _PAGE_UFFD_WP -> _PAGE_UFFD > _PAGE_SWP_UFFD_WP -> _PAGE_SWP_UFFD > > Pure mechanical rename -- no behavior change. > > Signed-off-by: Kiryl Shutsemau > Assisted-by: Claude:claude-opus-4-6 > Reviewed-by: Mike Rapoport (Microsoft) Reviewed-by: SeongJae Park Thanks, SJ [...]