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[213.175.37.12]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37cbc2c1ed9sm1444993f8f.34.2024.09.24.05.20.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Sep 2024 05:20:46 -0700 (PDT) Message-ID: <900b012f-c36d-4470-860f-1489879d2bd9@redhat.com> Date: Tue, 24 Sep 2024 14:20:45 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 2/2] mm: Allocate THP on hugezeropage wp-fault To: Dev Jain , akpm@linux-foundation.org, willy@infradead.org, kirill.shutemov@linux.intel.com Cc: ryan.roberts@arm.com, anshuman.khandual@arm.com, catalin.marinas@arm.com, cl@gentwo.org, vbabka@suse.cz, mhocko@suse.com, apopple@nvidia.com, dave.hansen@linux.intel.com, will@kernel.org, baohua@kernel.org, jack@suse.cz, mark.rutland@arm.com, hughd@google.com, aneesh.kumar@kernel.org, yang@os.amperecomputing.com, peterx@redhat.com, ioworker0@gmail.com, jglisse@google.com, wangkefeng.wang@huawei.com, ziy@nvidia.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20240924101654.1777697-1-dev.jain@arm.com> <20240924101654.1777697-3-dev.jain@arm.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: bupd17p8ocw3mwih4zfc1x385xqkj6gx X-Rspamd-Queue-Id: AD111140009 X-Rspamd-Server: rspam02 X-HE-Tag: 1727180450-679645 X-HE-Meta: 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 i1ES1YKB 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000004, 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 24.09.24 12:16, Dev Jain wrote: > Introduce do_huge_zero_wp_pmd() to handle wp-fault on a hugezeropage and > replace it with a PMD-mapped THP. Remember to flush TLB entry > corresponding to the hugezeropage. In case of failure, fallback > to splitting the PMD. > > Signed-off-by: Dev Jain Nothing jumped at me and it looks much cleaner now Acked-by: David Hildenbrand -- Cheers, David / dhildenb