From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A9D9833B6D5; Fri, 8 May 2026 23:52:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778284334; cv=none; b=NeFGzJT+1U247Dm5m6fnbs+01nKRxSfokQ5x8strwebWhOmij5qeW5I5xZaWlmV9G5W3IE0dE2yD+09CoYwp8nR40ua0FcgKs1BimfIWxWVFRkmEfrfD383GBXh0p+M+HnPVow7fsKTWZBPYs8AGeLPaVexWoY4BWIFmhul2r7E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778284334; c=relaxed/simple; bh=2A7cLXV+8i/TgBjrSYIiWz4AFId2IjKQBmgGj/uotSs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mATXEtUfHPF7tU061QeAueyUV0Iv1QDCag6xWnYOmUkeJllFnq0puLyILC1Kwck2UvmIOYb0zJ9mGKeKeWu6hReSN2+z3HAs3Zy15bWrf1PhSRFj/BgztIHqU9Cqvwmenb5CdkTGaFzcdOB/GqwAhHXT1UDvQaG0PejsKI7/JGk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Wzlh+gEP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Wzlh+gEP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A102BC2BCB0; Fri, 8 May 2026 23:52:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778284334; bh=2A7cLXV+8i/TgBjrSYIiWz4AFId2IjKQBmgGj/uotSs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; 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: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 [...]