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t=1750985390; bh=2mFT3JPm8NqU5vwR61bPE8xlg3A57QqzEU7GhQm5UYI=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=cTI9STuFEmWrxrUScipw1SpUTxIcKU1+qT6CWh0gVIMz4rOoJkysBarsmb4pT80VR YGSaurNmFEJJrQD6gwIF32KNfyZR5uRwAA86wUrCQna45hkkDRAjXoq5cWCRqzZ7aC kBgS7xhraFFzbmFS2+VlE1thlNHsq1aQz2D3PnJ1LpvHRMvxk3akRDHdJo69gg8+wC ewgNJudm1FuRXo65uUU+IE6DM5kxBhKt8MT7a0gJw0EVfUS9MHVTPwl180rRndQ5c3 GY/PsbOOFb3eyHYV7R33bdeDvC0piMx6ptBcfCOZuDwKIBkz3MxZkUv/T165mQ4FeH /nTlQjnQrKyJQ== Date: Thu, 26 Jun 2025 17:49:48 -0700 From: Jakub Kicinski To: Byungchul Park Cc: willy@infradead.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel_team@skhynix.com, almasrymina@google.com, ilias.apalodimas@linaro.org, harry.yoo@oracle.com, hawk@kernel.org, akpm@linux-foundation.org, davem@davemloft.net, john.fastabend@gmail.com, andrew+netdev@lunn.ch, asml.silence@gmail.com, toke@redhat.com, tariqt@nvidia.com, edumazet@google.com, pabeni@redhat.com, saeedm@nvidia.com, leon@kernel.org, ast@kernel.org, daniel@iogearbox.net, david@redhat.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, horms@kernel.org, linux-rdma@vger.kernel.org, bpf@vger.kernel.org, vishal.moola@gmail.com, hannes@cmpxchg.org, ziy@nvidia.com, jackmanb@google.com Subject: Re: [PATCH net-next v7 7/7] netmem: introduce a netmem API, virt_to_head_netmem() Message-ID: <20250626174948.1fa2ce34@kernel.org> In-Reply-To: <20250625043350.7939-8-byungchul@sk.com> References: <20250625043350.7939-1-byungchul@sk.com> <20250625043350.7939-8-byungchul@sk.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: ht5iyc6htyoojd491kzy7surpy3r7mw8 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: CEE1D1A0006 X-Rspam-User: X-HE-Tag: 1750985391-833754 X-HE-Meta: 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 pUiq4WOY zsVbYLLft4lvja1R1qJLUcru0OphNdoN/oC2AIbsQnsSjv5W0iPisyrI52A9zQns/byG+pF5X8YW4RfYNiuXX9pAJkiqJR4ZZujyuGSGbSVssQeEHdAkP8ajVclmfsq1MSZh8G69M00FrH7xym5esXdl2s0+Zm9iNYcAz6Z+ba48Z2w2p9u8gRxepqbKCo98BUd3UuGdx/mwezFEHJpD+RN/WHLblQJL/DYVu9Oae+0aUumMfqBdjBdiBQKes4VPan9P1EBjLUVMXMwnXWNxCLOaYf0RZIpa8I8yVa+wxEiJOPa/5w70Etu4Gheqw7KtcjmWSqfDwyVzPk2Y5JoVepygwe3lo/4Gbb8VfXAjnRj0P4rkO4V3RGkHf2ODiISiwOmMGpaRffNTJlZQA8Ybzqz+BooDC25R4G07+ 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 Wed, 25 Jun 2025 13:33:50 +0900 Byungchul Park wrote: > To eliminate the use of struct page in page pool, the page pool code > should use netmem descriptor and APIs instead. > > As part of the work, introduce a netmem API to convert a virtual address > to a head netmem allowing the code to use it rather than the existing > API, virt_to_head_page() for struct page. nit: this one needs a caller for the new function to be merged