From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 5E7FA2DF714 for ; Thu, 18 Sep 2025 09:03:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758186190; cv=none; b=BS/sjkCpHmENziWQafLBDB8sQD/FEQVQMQGNs0OUbe+xNADS8U6DFjehcKJJ6VqtGgQFmBuPcqtr70ydUhZbB22hfFbP3GpvwXyt2KPE3VMgz+lLuVc3RGjugshvsMiyB0bE3Q7VLSjg8zwJWEKIHXpENYhpmIIUe0RV17eEntw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758186190; c=relaxed/simple; bh=3gF74B/Ah4EDnWU58ZXx6dvP16HFD3sYPDMbzivTE0c=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=sQsM3a5PEIgrd6YdHv4HWvSq82KQKPfCUoAnRC1rwY8e9Gb2K/bwXYPv8uRuChqrXLp9IpXdt+T8r78bWCmo0hyaJ0u1EsDJCuoBRUWAP4mQ7QtX4kPknV5Xy/vylXGn/fs3orrxwn8+KnC7mxtdvpYnkaaNcNncfPr/tiVfo/I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=MCjtsiz4; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="MCjtsiz4" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1758186188; 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=XFCZX9eN7thiq9pavKtpP8J9JCm4he2B7yCgrgp98u4=; b=MCjtsiz4r9xGj+hY01nwJfnHfS/x74Wez0cQH0RlxB6nI6WsptM4xKY+TOJotUsgpZev9X wb/PWgC8Oc9RujZKW7PV3HM1CnV/p2eAQIF3GoyvhHSTUZjm7bcurfjEwwCrKcbtx8eAgh OUUiP4Rc3MsrCmEwdgpxAdJVriCXSbY= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-93-3GZntSIDNtOGQiKBrg5Z0w-1; Thu, 18 Sep 2025 05:03:06 -0400 X-MC-Unique: 3GZntSIDNtOGQiKBrg5Z0w-1 X-Mimecast-MFC-AGG-ID: 3GZntSIDNtOGQiKBrg5Z0w_1758186186 Received: by mail-wm1-f71.google.com with SMTP id 5b1f17b1804b1-4612d068c47so4056775e9.3 for ; Thu, 18 Sep 2025 02:03:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758186186; x=1758790986; h=content-transfer-encoding:in-reply-to: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=XFCZX9eN7thiq9pavKtpP8J9JCm4he2B7yCgrgp98u4=; b=Cf1z/3BM8QV09Jovj231idgzTdR9CYk34rMf4iV2lS/KByeac+9fSetl1xXz5z3cLa E2c0Dqn7SpCzaHc7BRQFw0tA7jjCVGa2623awsozQOIiPEw09KbmT5OUGwapSzZWzaQd sSOWZFW2tUepEqXpqCZ76xrOzgNuMy4iHmYT31R7ZAIRBEq5FiKwFhR6vrKdySz3b2RP DW64+5UYYyQlZXFDU0e3MxdCXK2rsieYtQxPz5lvXrONgaY3MlsKLNwyrMhmnGjmBezN G04VH1ibsDtOYzEsFsOPDLZLuYOrX40qj89bwA7zNFVUXKUwZmlZePCGdHQXYxTOra7M TKwg== X-Forwarded-Encrypted: i=1; AJvYcCXIZ/oJEtmhLeIX0v9groLIaQV5xwLbEm95Rqa6JEb7io5tmPED86kQEH8VIrRfD4rV/IDQNEysfkuelQQ=@vger.kernel.org X-Gm-Message-State: AOJu0YzLkhLJSL5UTBgjpej9t21L3CDKI7PeQC9uhNZTLQihc67TipUO sYNWZj0PAcE5cKgSyHjQjZTktoFWYuNEFjk8shmRlS8rto7R7D3pFoOktZNTfDSkH91DqxDxUvg HOzi4DYHEyYhlb/v0uWSqyflxJvkUbBgHB5r5tmRJVbot10T0LtCF93IQUPzgT/z7ww== X-Gm-Gg: ASbGncuPiqb9Ul8ivFhC9BX3notW9f1gnpIlNSl/ru5hvYbORkmF0aNWkGywnaJbQzb XA7APeC2zg1PcR7iyERPKdYajexreD5AFyiOJ8OofmoJdO2SRmUL0Y+un1jEaujsptESB+u0FR6 TzDzAcFB5pmtdCYPh2/Lx+tx9sGWUuyeAqA6cRThRVNxHLdnxX37tfIg4c0iKdmMlIgHCxx6Gdj Y37CjBktwBct1HiiXoGzP8WsbXjsLadYPTzcAD4kct2WeCXjHJnNV/gHmM1c0X19A9bQL46tT/3 iYaCyQk6AWtIbwX8pPOWoftpFzDV9ECebrAeWnnyeyBkdwxautHWJfAInV5loG6A6rD5ivv8g3W 3OI5HFlpzuDAO1u8bTvUz8L5khvILXxqEtxa2qMOqjYkuOLcIhVWAnWUcvKiVRRdPP+Di X-Received: by 2002:a05:6000:2313:b0:3e7:42ba:7e66 with SMTP id ffacd0b85a97d-3ecdf9f4477mr4804881f8f.3.1758186185379; Thu, 18 Sep 2025 02:03:05 -0700 (PDT) X-Google-Smtp-Source: AGHT+IElkxupMxmNif5/lzfzUVobHl0PSoeQ1IdEubg1s704Bcn0Lb4/+vf/JHCv5gGV276WTwwYSg== X-Received: by 2002:a05:6000:2313:b0:3e7:42ba:7e66 with SMTP id ffacd0b85a97d-3ecdf9f4477mr4804839f8f.3.1758186184853; Thu, 18 Sep 2025 02:03:04 -0700 (PDT) Received: from ?IPV6:2003:d8:2f07:dd00:ca9c:199e:d2b6:9099? (p200300d82f07dd00ca9c199ed2b69099.dip0.t-ipconnect.de. [2003:d8:2f07:dd00:ca9c:199e:d2b6:9099]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4613e754140sm70721995e9.21.2025.09.18.02.03.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 18 Sep 2025 02:03:04 -0700 (PDT) Message-ID: <45cd1637-54f6-4941-9670-7130aaf080f0@redhat.com> Date: Thu, 18 Sep 2025 11:03:02 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V14 1/6] mm: softdirty: Add pgtable_supports_soft_dirty() To: Chunyan Zhang , linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Deepak Gupta , Ved Shanbhogue , Alexander Viro , Christian Brauner , Jan Kara , Andrew Morton , Peter Xu , Arnd Bergmann , Lorenzo Stoakes , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Axel Rasmussen , Yuanchu Xie , Chunyan Zhang References: <20250918083731.1820327-1-zhangchunyan@iscas.ac.cn> <20250918083731.1820327-2-zhangchunyan@iscas.ac.cn> From: David Hildenbrand Content-Language: en-US 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 ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZoEEwEIAEQCGwMCF4ACGQEFCwkIBwICIgIG FQoJCAsCBBYCAwECHgcWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaJzangUJJlgIpAAKCRBN 3hD3AP+DWhAxD/9wcL0A+2rtaAmutaKTfxhTP0b4AAp1r/eLxjrbfbCCmh4pqzBhmSX/4z11 opn2KqcOsueRF1t2ENLOWzQu3Roiny2HOU7DajqB4dm1BVMaXQya5ae2ghzlJN9SIoopTWlR 0Af3hPj5E2PYvQhlcqeoehKlBo9rROJv/rjmr2x0yOM8qeTroH/ZzNlCtJ56AsE6Tvl+r7cW 3x7/Jq5WvWeudKrhFh7/yQ7eRvHCjd9bBrZTlgAfiHmX9AnCCPRPpNGNedV9Yty2Jnxhfmbv Pw37LA/jef8zlCDyUh2KCU1xVEOWqg15o1RtTyGV1nXV2O/mfuQJud5vIgzBvHhypc3p6VZJ lEf8YmT+Ol5P7SfCs5/uGdWUYQEMqOlg6w9R4Pe8d+mk8KGvfE9/zTwGg0nRgKqlQXrWRERv cuEwQbridlPAoQHrFWtwpgYMXx2TaZ3sihcIPo9uU5eBs0rf4mOERY75SK+Ekayv2ucTfjxr Kf014py2aoRJHuvy85ee/zIyLmve5hngZTTe3Wg3TInT9UTFzTPhItam6dZ1xqdTGHZYGU0O otRHcwLGt470grdiob6PfVTXoHlBvkWRadMhSuG4RORCDpq89vu5QralFNIf3EysNohoFy2A LYg2/D53xbU/aa4DDzBb5b1Rkg/udO1gZocVQWrDh6I2K3+cCs7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20250918083731.1820327-2-zhangchunyan@iscas.ac.cn> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 18.09.25 10:37, Chunyan Zhang wrote: > Some platforms can customize the PTE PMD entry soft-dirty bit making it > unavailable even if the architecture provides the resource. > > Add an API which architectures can define their specific implementations > to detect if soft-dirty bit is available on which device the kernel is > running. > > This patch is removing "ifdef CONFIG_MEM_SOFT_DIRTY" in favor of > pgtable_supports_soft_dirty() checks that defaults to > IS_ENABLED(CONFIG_MEM_SOFT_DIRTY), if not overridden by > the architecture, no change in behavior is expected. > > We make sure to never set VM_SOFTDIRTY if !pgtable_supports_soft_dirty(), > so we will never run into VM_SOFTDIRTY checks. > > Acked-by: David Hildenbrand > Signed-off-by: Chunyan Zhang > --- [...] > mas_store_fail: > diff --git a/mm/vma_exec.c b/mm/vma_exec.c > index 922ee51747a6..a822fb73f4e2 100644 > --- a/mm/vma_exec.c > +++ b/mm/vma_exec.c > @@ -107,6 +107,7 @@ int relocate_vma_down(struct vm_area_struct *vma, unsigned long shift) > int create_init_stack_vma(struct mm_struct *mm, struct vm_area_struct **vmap, > unsigned long *top_mem_p) > { > + unsigned long flags = VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP; No need to resend because of this (probably can be fixed up when applying): there is a double space before the "=" -- Cheers David / dhildenb