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(p200300d82f4e3200c99da38b3f3ad4b3.dip0.t-ipconnect.de. [2003:d8:2f4e:3200:c99d:a38b:3f3a:d4b3]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-429897f57d9sm5671794f8f.20.2025.10.23.13.03.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 23 Oct 2025 13:03:07 -0700 (PDT) Message-ID: Date: Thu, 23 Oct 2025 22:03:04 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 10/13] sparc/mm: replace batch->active with in_lazy_mmu_mode() To: Kevin Brodsky , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Alexander Gordeev , Andreas Larsson , Andrew Morton , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , "David S. Miller" , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Vlastimil Babka , Will Deacon , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org References: <20251015082727.2395128-1-kevin.brodsky@arm.com> <20251015082727.2395128-11-kevin.brodsky@arm.com> 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 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: <20251015082727.2395128-11-kevin.brodsky@arm.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: wCxiRXEQcSUE_a7lkg9mFy4V_2jTbZ94AYzzOI9v7Ho_1761249788 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 339C640009 X-Rspamd-Server: rspam11 X-Rspam-User: X-Stat-Signature: h8h1i9zzxrs4gxabzum9nwszgt1bqpki X-HE-Tag: 1761249790-825915 X-HE-Meta: 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 G9EMwIGV upCkSUBXGk5dyuSPs2xGc60gIDRcUr+9sJYXz9EWBrY16IhdZlMGUIPjpLMzJ07xJ9PN0u9+7rTBwmCVl4Hbt358SA2LEWiv276XHOdAVoJe1UfxjCTTuYTGMDfXjzXgVHHCqnQ1vXn/ISxW/NvpD0FGCmqFRRKpEyhwGbWs2gC0UmYjZSjjFKGr0REIvol8Z/igVsuhe8i7FTVzAFQ9D6SpA2EfYpSudp5UcHv5M/vL1psZzQOFJmepRXYDzXPMpbU5tHbELgIa/4SE2VeE67GGh+R5TBoYoCvRI5OJ6ui54r7sC3fzdp5PhrAEG2+03eLmRQ8/bOUiZtndcv/GXakvn3ysylWAfF/C9TeOUT6xMuaib1lznR/TnNDhZyCAuU+23/00K7GTgbUi/Z6lghKxfLDPN3zWvfMbvDvF60rt1KhXbqOu6KZxFTrEPUF144CvMyQfwhJzu9jLE3wZ4ldVcTqSWFw2nrhq1 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 15.10.25 10:27, Kevin Brodsky wrote: > The generic lazy_mmu layer now tracks whether a task is in lazy MMU > mode. As a result we no longer need to track whether the per-CPU TLB > batch struct is active - we know it is if in_lazy_mmu_mode() returns > true. Same here, document the dependency on disabled preemption. -- Cheers David / dhildenb