From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EF924C71157 for ; Tue, 17 Jun 2025 09:54:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=QeaQyg08N2bK9CSAL6amctKGL4o8t+/yBMjOyZjIdjM=; b=0DW74Dh9yZ7Q36O3DG9kpeAwBX qbXi1GFqsiLnLslgBIB2JWvNUvNESISWPq+PUJvQOWzF2xxsaU1ufPS163b3TQFD2r3XLUuPC98xz tFd9deP3NKzvP1veT6f2qROhsBzOFIOc73kXnzz23mqGmGxirdRoohxO1GPoAK8VW2ZW8zkKL2UQT oJa3Oo5nOBjHLzt3Yr1H+RFy3WmgF1fXeiKFMmO/nk7wjZ/Vd1uEX9r4ms2Gc05uiHBJqCuWwXeNh zy5GhaW6jrh6RVYbTw7ZqjTlumjPrE2FFP6XwPk1gmkSzJBkYoh9uWZNnUM0pw7Km8gCJdQXaAgR0 SHwyGFHw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uRT1S-00000006pzW-3jBc; Tue, 17 Jun 2025 09:54:30 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uRSkQ-00000006mRT-0FpF for linux-arm-kernel@lists.infradead.org; Tue, 17 Jun 2025 09:36:55 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1750153012; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=QeaQyg08N2bK9CSAL6amctKGL4o8t+/yBMjOyZjIdjM=; b=SUObzYDLvU/05hirX4C6KYkqMl9ls6c3aRL5GsfdXyz2oWamqKsGC7/Z0XYsFcmTSEA/WC fO3DI0MrJpkKRYAGwmqobiEXPKrm0kr3EkJc6Xa1HOYl84o2ni/IeEJSNIZ2vhTTURRGGo 0pDW05tiMiTAvrwW1tmFGtSXoe7yOjw= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-212-ZB9avdh7NyqCF4Yz0Db8Gg-1; Tue, 17 Jun 2025 05:36:50 -0400 X-MC-Unique: ZB9avdh7NyqCF4Yz0Db8Gg-1 X-Mimecast-MFC-AGG-ID: ZB9avdh7NyqCF4Yz0Db8Gg_1750153009 Received: by mail-wm1-f70.google.com with SMTP id 5b1f17b1804b1-450d9f96f61so43242495e9.1 for ; Tue, 17 Jun 2025 02:36:49 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750153009; x=1750757809; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:from:references:cc:to:subject:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=QeaQyg08N2bK9CSAL6amctKGL4o8t+/yBMjOyZjIdjM=; b=kG6vV7FSlfruKrvUzYSW96t963TwUY8NmSpWhTxz4rJ+51SaEGh2vxFXWTGSEmmIO/ X/EndX70eit1NfEe9kLCBAW5b/xfovlOLEBTvulC0sKlEiMc7GNGfwMpc4FTMZ6TInai m9QCZd/gimhG0/I6ZiOWo/FONM19j+mvlqyb4Jgq8FkGOn+ZN5clRtWp27yyF1EgXYAY TWAu2EvjjcfPfaSC25G1kyF3Hsrv2sb9Hxw6ZknJbPIFJTqYhFgD3LqlhwI/LU4DIsvQ WqmrLMLIerrQOQG3EGqlvkPrlLIzUdCLrBl4WypX43eKARHs7RRxAK7NpBMTX18VzXHw SswQ== X-Forwarded-Encrypted: i=1; AJvYcCVeNzneg9A0PpY5VQNrSmyGO70CrzuRTrMntdVUVJhdKGnr9MyLjXN6mys9veHYLV4AM3/vQMXFLwn5kVzs1vfy@lists.infradead.org X-Gm-Message-State: AOJu0YxT2kT2Oqt9Zl6pvDhqaC3+m4NqwBGMOebH8+km6bGl0EbUpHWK H7/Y39rrYpUVvLFtPsEXBZgz91MPBHi/SXiv0AcBhujR997tm2PgTUhwemV5vVYzHWCzYNnrhpY udx0EzMYZfHWeS0kVD7XTdXWEKOfYGZ5xkr0H5/jWjPqJ+bFpFlKeSC3KJtT3/QP9+YnPyyMT8j Rv X-Gm-Gg: ASbGncuXqVc0RWIqYb/5tFjF4xYwoZ4YSe5MqfidwcJCIS+o2py/jALvjzHgNURKxwe jwA0LYPYS66nxqDCAqeIfFfPQojFoq4D+ZfFV8BAKfo49ciK9LPuM9+YjwLL4+qoPQ3Gm/bXuNC NRcRrwDYCINfADHosEgf3O6BQ8a2L0xSH0j24AUJqRDbWK4hg7prolMgTC9HEPM7wpD97VLFcuK HrdYLd5tCL2/U/6ZlGn0RsEXlvA2TlrgEl58xi/meln4aJJS7OiUAkum+ns/ZRRiMW+WaUUBRyg ta8lH8YtDGfjPMjsOLfjoN9m2g8n4y67VqpDMUOycqoEbJDRVvN11bkjhmV5H+ID+s5QolyK/Ys haJiqbzIqAfcnPt+HWlxoG4xqyno2fyI2+2aEy2Br5sFFOWI= X-Received: by 2002:a05:600c:6205:b0:441:a715:664a with SMTP id 5b1f17b1804b1-4533caa628fmr107487215e9.20.1750153008756; Tue, 17 Jun 2025 02:36:48 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHiGU6rdJOxze5zntN178WfWP080iOaFrEHA392zHARPkcDs+AZMCwZ9uBzuwzj+r+ddywNSA== X-Received: by 2002:a05:600c:6205:b0:441:a715:664a with SMTP id 5b1f17b1804b1-4533caa628fmr107486885e9.20.1750153008407; Tue, 17 Jun 2025 02:36:48 -0700 (PDT) Received: from ?IPV6:2003:d8:2f31:700:3851:c66a:b6b9:3490? (p200300d82f3107003851c66ab6b93490.dip0.t-ipconnect.de. [2003:d8:2f31:700:3851:c66a:b6b9:3490]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a568a54a36sm13644198f8f.15.2025.06.17.02.36.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 17 Jun 2025 02:36:47 -0700 (PDT) Message-ID: <911e7b40-e30e-477f-a4e5-df34df1d0e14@redhat.com> Date: Tue, 17 Jun 2025 11:36:46 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 11/14] mm: Remove devmap related functions and page table bits To: Alistair Popple , akpm@linux-foundation.org Cc: linux-mm@kvack.org, gerald.schaefer@linux.ibm.com, dan.j.williams@intel.com, jgg@ziepe.ca, willy@infradead.org, linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, jhubbard@nvidia.com, hch@lst.de, zhang.lyra@gmail.com, debug@rivosinc.com, bjorn@kernel.org, balbirs@nvidia.com, lorenzo.stoakes@oracle.com, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-cxl@vger.kernel.org, dri-devel@lists.freedesktop.org, John@Groves.net, m.szyprowski@samsung.com, Will Deacon , =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , Jason Gunthorpe References: From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: TIxCI4hBfJvJGfbux-QqjAhsXnvANENob__eNnlHvMQ_1750153009 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250617_023654_176392_3ADFE531 X-CRM114-Status: UNSURE ( 7.40 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 16.06.25 13:58, Alistair Popple wrote: > Now that DAX and all other reference counts to ZONE_DEVICE pages are > managed normally there is no need for the special devmap PTE/PMD/PUD > page table bits. So drop all references to these, freeing up a > software defined page table bit on architectures supporting it. > > Signed-off-by: Alistair Popple > Acked-by: Will Deacon # arm64 > Suggested-by: Chunyan Zhang > Reviewed-by: Björn Töpel > Reviewed-by: Jason Gunthorpe > --- Acked-by: David Hildenbrand -- Cheers, David / dhildenb