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 31F9F1F1538 for ; Tue, 26 Aug 2025 12:52:46 +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=1756212768; cv=none; b=bK9zZ9Fl4WB6g+tBGHn/9514t9sKHovestBQdAC8nseBrpoEa8JhzGyn5mltUWNWu7bGCjYPW8RmL985uZnmH+voe3wS4DNiwPynXGV3Zhyn5fglOjetFO4M0L0iLI5E8TO3qZbb2ItHouGQbwHB7iJW1etg2bS0cnsek5e4BBk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756212768; c=relaxed/simple; bh=k5MCHKj7blibyy5zPpkOhb8vWnmi5w1AKxvpa4zk8pA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=rT76qS6K8NdHX83cNsTOmVcqKckzWgCg2P2P+PAVf7qccXsO7BNaoidoxwu29tnwOMDHAlx5sfUOGRM0O8nA5cftDhGYtcTg8KG0TkzCOcYx1fIDoJGLLtcRtnK0itJ6cBEJ/mb8PnuM6CTFtyq6+AOS5ws9Y9Xm0qVMiWlGz+w= 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=jVUpwUH9; 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="jVUpwUH9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1756212766; 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=5Vz1R7k8T1KQ49bbM/J3Kx97e9ioYWkA8ABG1durfCQ=; b=jVUpwUH99M4cvyYuE57QFIP56PYJ40Dbps+PcM07wxtAQSlWbTBWyj4e81UT6U4UZeg5qZ CUtmMHyZSTjjlhwr/oV98kflws4WUx1HwCUIMjpRFqajptmYPt9cSVnAgvMol3qENFVjTJ Ka8oiex0Bsz7aFdkSUD53rf4oCKPBhQ= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-621-mK1pwP0SP2iWUkawDB2gtQ-1; Tue, 26 Aug 2025 08:52:44 -0400 X-MC-Unique: mK1pwP0SP2iWUkawDB2gtQ-1 X-Mimecast-MFC-AGG-ID: mK1pwP0SP2iWUkawDB2gtQ_1756212764 Received: by mail-wm1-f72.google.com with SMTP id 5b1f17b1804b1-45b51411839so27549435e9.0 for ; Tue, 26 Aug 2025 05:52:44 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756212763; x=1756817563; 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=5Vz1R7k8T1KQ49bbM/J3Kx97e9ioYWkA8ABG1durfCQ=; b=XTmDDpmhvVBNP38iQ+KEtFTO7qTzHlj/yjyt6Jsa1aLfLdKZ4sLUSFImitRMKcZONk 4ADGa83n5cFUYwaEjeLs0QmFnd3JqYd/17feJv9hHPTLcuW+fujhq26NCdC6Gu9wIxS7 zDAsyNAoEo1jBeKX38NTY8x0DMcwQ4Y2JunCJn2hto+z1fkAnx7fq64L8iFWZZTT6msL WdzbjkfMECCD0QyKVOyzOmnvfoTf8RRiMPgGT1do2C8O1UE9Y52yZRRDXBTQDCHFqr1+ dpO3WhgW5vM+NOZanuJ7cRuOVHeP6Kaq3/iIWV0MFslFCCZ3I+jMvZ1T6nl4K/z8lZpZ JNXA== X-Forwarded-Encrypted: i=1; AJvYcCV5Ul8l+1eqf0qffRRicoKQxd6ndtCDcFhwiYCPhg4aZjU+NOalHjHc2wGrq3P/I4IwATSqdI7cr5EI@vger.kernel.org X-Gm-Message-State: AOJu0Yys0JejcOFnuMZ2i6fgGmEJD2/og1qG/2+erYq643Z1nMGGfIc5 NjJISHiuwp8t/TvKjryxL2nLBj1Pc3C0re/Gql2G+dyDj/NCDtlydiwmVe2Qp/SPp9+xJhHE4aY 8P5glQtkDAM33pxv5v+DWARTdZ7XozdHRhXsiU3AJRLOJYKW7CF4m8PY2ZdY0xmY= X-Gm-Gg: ASbGnctQnEPzgANXVcahIzvBudyP8Qo3yXceTGeQNbrMdtTfjPj+mto5Iwb9y/LGmd1 sKVSxl5P5Op52IonvKUWoz35VLs3ODopZLQoEwj1iM7kJZyJ5pAoR0hc7pXJwVYmCIhCGMyYTtx +I0z62mAgxgeQYQQlr3EM126/Qurqo1vR+v+YQf98iqoRfBI9Hdsla9XyU561gnUmWOImPUaTWB /mDIYhFi978/x6ij0S/wa4Ntr8nyN01WECtBXSMLzCT5N8q+h8sL8IgsBnQOrgD4VzK1/R2GQqo zGb2nf/2kwtb9URwcPP2LvxaWz9Kme0cN/O/mtPk5NDoCwIUoFcUOxzg9qyFs/862wx/P/9iAQ= = X-Received: by 2002:a05:600c:1d87:b0:45b:5ff4:2f8f with SMTP id 5b1f17b1804b1-45b5ff43124mr61464985e9.4.1756212763439; Tue, 26 Aug 2025 05:52:43 -0700 (PDT) X-Google-Smtp-Source: AGHT+IE+M/jeTazxf68z81jh4Va5KXU4ShyIE7qdnSUUsql0k7LYf1+dpn5sXS6z1aKLM87GqMxuBA== X-Received: by 2002:a05:600c:1d87:b0:45b:5ff4:2f8f with SMTP id 5b1f17b1804b1-45b5ff43124mr61464415e9.4.1756212762973; Tue, 26 Aug 2025 05:52:42 -0700 (PDT) Received: from ?IPV6:2a09:80c0:192:0:5dac:bf3d:c41:c3e7? ([2a09:80c0:192:0:5dac:bf3d:c41:c3e7]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45b575736f1sm149280645e9.13.2025.08.26.05.52.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Aug 2025 05:52:42 -0700 (PDT) Message-ID: Date: Tue, 26 Aug 2025 14:52:40 +0200 Precedence: bulk X-Mailing-List: sparclinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 06/10] mm: update coredump logic to correctly use bitmap mm flags To: Lorenzo Stoakes , Andrew Morton Cc: Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , "David S . Miller" , Andreas Larsson , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , Alexander Viro , Christian Brauner , Jan Kara , Kees Cook , Zi Yan , Baolin Wang , "Liam R . Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Xu Xin , Chengming Zhou , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , David Rientjes , Shakeel Butt , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , Masami Hiramatsu , Oleg Nesterov , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Jason Gunthorpe , John Hubbard , Peter Xu , Jann Horn , Pedro Falcato , Matthew Wilcox , Mateusz Guzik , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org References: <2a5075f7e3c5b367d988178c79a3063d12ee53a9.1755012943.git.lorenzo.stoakes@oracle.com> 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: <2a5075f7e3c5b367d988178c79a3063d12ee53a9.1755012943.git.lorenzo.stoakes@oracle.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12.08.25 17:44, Lorenzo Stoakes wrote: > The coredump logic is slightly different from other users in that it both > stores mm flags and additionally sets and gets using masks. > > Since the MMF_DUMPABLE_* flags must remain as they are for uABI reasons, > and of course these are within the first 32-bits of the flags, it is > reasonable to provide access to these in the same fashion so this logic can > all still keep working as it has been. > > Therefore, introduce coredump-specific helpers __mm_flags_get_dumpable() > and __mm_flags_set_mask_dumpable() for this purpose, and update all core > dump users of mm flags to use these. > > Signed-off-by: Lorenzo Stoakes > --- Incl. fixup LGTM Acked-by: David Hildenbrand -- Cheers David / dhildenb