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b=q0Ior458+826MxxYajg8HR0bjSFxuUwS3Nf9kiAi2a/JGmfCYN8qf+G+Vry8JIdR1 Jx5fSuZJjo1zQEJ7jHvSGj61vq15Ouq92kAYbbiXnslEXWhuLH2f+Ui8aVdYs6P56n J2Tpp7AHZzHec8lj0hq6Ej4EQ8h9DIAc4VHpYvf3vHx7z6GDYaYTZ5qWTTZRXcgKYs b9pL50XSXLOBzxEtOs4rtAFI+TK2wM6NgPhaEkt4pp6HAcXhrPEuasbZ86sFD6b45F kio9wDn04LWHISRVcqC2GICZIn+agnQpZ2kX9lY2s+edyQqCwDgWzbqg0jQC4PGpA4 amMFHz69ELOQA== Date: Mon, 4 May 2026 09:51:54 +0200 From: Mike Rapoport To: "Kiryl Shutsemau (Meta)" Cc: akpm@linux-foundation.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, 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 Subject: Re: [PATCH 02/14] mm: rename uffd-wp PTE bit macros to uffd Message-ID: References: <20260427114607.4068647-1-kas@kernel.org> <20260427114607.4068647-3-kas@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260427114607.4068647-3-kas@kernel.org> X-Stat-Signature: thxjjuhzu9c4yxbtbbao6dncs8zj6pj7 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 2ECCC140004 X-Rspam-User: X-HE-Tag: 1777881127-897757 X-HE-Meta: U2FsdGVkX1814d0rW1UMHxXPmkCU2jiX7k8IiDpsatIwayGlKUiy5l/PPj8gbYmXB9et+kfN6HTv3DTX63/ftA2bfedmx/aTqExnHuXNb40cMqQcmckgfmO2GmzOGXvbKNokZOVxRzHvpELk7bCJ0Yw00Y9x8+hHpTLQh/Tv13KqQOJjCdWz0gUfoWyYOyL/C55273zIv3zOmYS418LBoQ/h0avlsmUan9/R879DMqjZ8XM2DuhzEkiF7UBWD0ZRGfRk4IWSmaD5QNJy3hNlmYNvKv9I0RSRMvT5AftvZBFGch45CzNw7OXNgOnRNWgRwNn2bR/EIcglM29H1zEVgH6KQcF43CSM5J8LnjJu5AfGHE+tt/UjGh5IjeSu5Tp7G1xASJc0chEU5+/HadZDSQcHXDKh4M0Gwk2VpPO4XaTPGq3zHd3c2NiqS7LyyAsFGPKDcTPD04lCkwLvMslffJP6L7iwiAX555hFDVxkuJEVWACfvyIwb6xB46nt2G/J6rwi706hePYErxRa02Ci0VJyh/XgMK8sB4URyPjs9FkbifhnKraAQdQuHr6Q33qXfAJL7b8Tzf/JyLGNgZ9ydDcCDAxClCoY6aKp4unzJu4BXEJWAlykjQyh2n2hKBGHe4Cy64uhLIDp1C/r7N05sK60JldzoD6lRvyd3+ZkaEm7BWF7gGz+4EX9M5g41XEig02d/IopgFpiq2JXiLO/qr+6gIwZFC8AbHTDAPedUpujmmSEMvBC6l6MM35h3IRzf25kBaBQUQJFBEps9gaXR1UHn8lz7ppyielQ+70HEWjSGG0HCu/HGUTT0IxIfvAUbt8j52YSM45+O2xRv/xIh0PEZPiNH9PtAc11yTcjwOrYbxYbDxDLByUIa3k8kqzG6z+b8ElALbg8nFZPuQdKv3T43XGmvumjmgR4mxXV+TXQyoDNhvxJKYQj6NRwArbsH6xA6tt8XjfL1hBpSHK d5VVVZxX 1+p2ux/rlb5ac8StpjYx9s5eXK/yRzkJYGpU9OOppXUOe8jW2fqpAQkj/31KWB7Bvs4UpTdr0CLPAM1ytnD18dwvliSLqfOJhC4eTe4usKYzphS0++BciefOHioBn+rL2+qDCExC/SNYjcnvEki9F3PfWC+thDkeU14Qi7pbAYvmu3XOQB1RbhlZheN5AegqIhdvnE9+gKt7Ty4n2x21DmGm8TZdslbpKjgQsk/Nm2KDNbipcGi/skPvh/9veFJpLhuQCYdym2akaiVRBBv5NZfQ8frwbruziIuQq8Z0zTMu74zM= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Apr 27, 2026 at 12:45:50PM +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) > --- > arch/arm64/include/asm/pgtable-prot.h | 8 ++++---- > arch/arm64/include/asm/pgtable.h | 12 ++++++------ > arch/riscv/include/asm/pgtable-bits.h | 12 ++++++------ > arch/riscv/include/asm/pgtable.h | 14 +++++++------- > arch/x86/include/asm/pgtable.h | 24 ++++++++++++------------ > arch/x86/include/asm/pgtable_types.h | 16 ++++++++-------- > 6 files changed, 43 insertions(+), 43 deletions(-) -- Sincerely yours, Mike.