From: Jakub Kicinski <kuba@kernel.org>
To: Byungchul Park <byungchul@sk.com>
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
Subject: Re: [PATCH net-next 1/9] netmem: introduce struct netmem_desc mirroring struct page
Date: Mon, 9 Jun 2025 12:32:55 -0700 [thread overview]
Message-ID: <20250609123255.18f14000@kernel.org> (raw)
In-Reply-To: <20250609043225.77229-2-byungchul@sk.com>
On Mon, 9 Jun 2025 13:32:17 +0900 Byungchul Park wrote:
> To simplify struct page, the page pool members of struct page should be
> moved to other, allowing these members to be removed from struct page.
>
> Introduce a network memory descriptor to store the members, struct
> netmem_desc, and make it union'ed with the existing fields in struct
> net_iov, allowing to organize the fields of struct net_iov.
What's the intended relation between the types?
netmem_ref exists to clearly indicate that memory may not be readable.
Majority of memory we expect to allocate from page pool must be
kernel-readable. What's the plan for reading the "single pointer"
memory within the kernel?
I think you're approaching this problem from the easiest and least
relevant direction. Are you coordinating with David Howells?
next prev parent reply other threads:[~2025-06-09 19:32 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-09 4:32 [PATCH net-next 0/9] Split netmem from struct page Byungchul Park
2025-06-09 4:32 ` [PATCH net-next 1/9] netmem: introduce struct netmem_desc mirroring " Byungchul Park
2025-06-09 19:32 ` Jakub Kicinski [this message]
2025-06-10 1:30 ` Byungchul Park
2025-06-12 1:55 ` Jakub Kicinski
2025-06-13 1:13 ` Byungchul Park
2025-06-14 2:19 ` Mina Almasry
2025-06-17 2:31 ` netmem series needs some love and Acks from MM folks Harry Yoo
2025-06-17 16:09 ` David Hildenbrand
2025-06-17 16:32 ` Harry Yoo
2025-06-18 0:08 ` Byungchul Park
2025-06-18 7:51 ` Pavel Begunkov
2025-06-20 4:12 ` [PATCH net-next 1/9] netmem: introduce struct netmem_desc mirroring struct page Byungchul Park
2025-06-11 20:53 ` Mina Almasry
2025-06-12 1:58 ` Jakub Kicinski
2025-06-17 2:20 ` Harry Yoo
2025-06-19 9:32 ` Vlastimil Babka
2025-06-09 4:32 ` [PATCH net-next 2/9] page_pool: rename page_pool_return_page() to page_pool_return_netmem() Byungchul Park
2025-06-10 11:15 ` Ilias Apalodimas
2025-06-09 4:32 ` [PATCH net-next 3/9] page_pool: rename __page_pool_release_page_dma() to __page_pool_release_netmem_dma() Byungchul Park
2025-06-10 11:11 ` Ilias Apalodimas
2025-06-09 4:32 ` [PATCH net-next 4/9] page_pool: rename __page_pool_alloc_pages_slow() to __page_pool_alloc_netmems_slow() Byungchul Park
2025-06-09 4:32 ` [PATCH net-next 5/9] netmem: use _Generic to cover const casting for page_to_netmem() Byungchul Park
2025-06-09 4:32 ` [PATCH net-next 6/9] netmem: remove __netmem_get_pp() Byungchul Park
2025-06-10 11:11 ` Ilias Apalodimas
2025-06-09 4:32 ` [PATCH net-next 7/9] page_pool: make page_pool_get_dma_addr() just wrap page_pool_get_dma_addr_netmem() Byungchul Park
2025-06-09 4:32 ` [PATCH net-next 8/9] netmem: introduce a netmem API, virt_to_head_netmem() Byungchul Park
2025-06-09 4:32 ` [PATCH net-next 9/9] page_pool: access ->pp_magic through struct netmem_desc in page_pool_page_is_pp() Byungchul Park
2025-06-09 17:39 ` Mina Almasry
2025-06-10 1:45 ` Byungchul Park
2025-06-11 14:30 ` Pavel Begunkov
2025-06-12 0:39 ` Byungchul Park
2025-06-17 2:37 ` Harry Yoo
2025-06-19 9:55 ` Vlastimil Babka
2025-06-19 10:42 ` Byungchul Park
2025-06-09 6:49 ` [PATCH net-next 0/9] Split netmem from struct page Byungchul Park
2025-06-11 14:25 ` Pavel Begunkov
2025-06-11 20:48 ` Mina Almasry
2025-06-12 0:40 ` Byungchul Park
2025-06-16 7:45 ` Jesper Dangaard Brouer
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