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b=OTT2DCpxVJAwwznmhT9Tzi9rrAaKoLzMGdUlOEf2s4KfQakBqJxRE2SQhiotb0YfC GtDUNoDmgf+UdmIy86xRTJFoNgxK1RO0IfniGexWa8pF7aO1pWYLq5e9rbZVkmEpA4 ITCIPOIdLNaaH1Gn0GH4gwpwksBBfNKXwZVu19uFyfXAeNa+po510UC5+SqzfcKE5q /xtZxQ/BDvri1i02zKPjUs2BvRJ/WY9VPGyvOa4RifRlGfa2nVAzy3MlVKycjGaA+Y hZOuwSgy+hWhzr8hWWXfD1HOmWjXvPl/WNWcVR/A0HvXC6M60keJVtg+d0u9JytpFH 9hmFd/RZz3psA== Message-ID: Date: Mon, 11 May 2026 11:00:40 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/memory_hotplug: Factor out altmap freeing checks To: Muchun Song , Oscar Salvador , Andrew Morton , linux-mm@kvack.org Cc: muchun.song@linux.dev, linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260511084307.1827127-1-songmuchun@bytedance.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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 B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+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: <20260511084307.1827127-1-songmuchun@bytedance.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: k6fj9rba1eqdyxi6ng8tronrrsgkboem X-Rspamd-Queue-Id: 3792240017 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1778490045-385878 X-HE-Meta: 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 eiQ0YaeB ab3tkbpxdaHoe8zht16s+MT/WAEbZlsP8pxwmLR1EVkwwbOXYToNKFDcwHjUJy8sS335hPoLymqFgZSFsKtzRSwLq0xYCPC0Ru7NlxITyy5/XC21rPcfY0NxYG21CJEpLD/+Z990cmNmmx9Kwqf+jN6U0u0re0uo92PPAEd7ShVs1RYI2n9nCm6TxsssX5LGRmcjcX0nUPQZM2mupFgEZquihrHUihj7iAo7h4heyHyFiiACvcHev0twqyVM34yIxJ31JV8lWgaNLihcI20L/DNkhQqEUT0bgFR2Te2gW/DxDrcpIF9dnPCBrPoCJcec9HKpoWfW23e/vrpdiFc2MFCQVCz/m2C6iVtYa Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 5/11/26 10:43, Muchun Song wrote: > Use a small helper to centralize altmap freeing after verifying that all > vmemmap pages were released. This keeps the check consistent between the > normal teardown path and the memory hotplug error paths. > > Suggested-by: David Hildenbrand (Arm) > Signed-off-by: Muchun Song > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David