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Miller" , Jesper Dangaard Brouer , Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Andrew Lunn , Eric Dumazet , Paolo Abeni , Ilias Apalodimas , Simon Horman , Andrew Morton , Mina Almasry , Yonglong Liu , Yunsheng Lin , Pavel Begunkov , Matthew Wilcox , netdev@vger.kernel.org, bpf@vger.kernel.org, linux-rdma@vger.kernel.org, linux-mm@kvack.org, Qiuling Ren , Yuying Ma , gregkh@linuxfoundation.org, sashal@kernel.org Subject: Re: [PATCH net-next v9 2/2] page_pool: Track DMA-mapped pages and unmap them when destroying the pool In-Reply-To: <20250611131241.6ff7cf5d@kernel.org> References: <20250409-page-pool-track-dma-v9-0-6a9ef2e0cba8@redhat.com> <20250409-page-pool-track-dma-v9-2-6a9ef2e0cba8@redhat.com> <20250611131241.6ff7cf5d@kernel.org> X-Clacks-Overhead: GNU Terry Pratchett Date: Thu, 12 Jun 2025 09:25:30 +0200 Message-ID: <87jz5hbevp.fsf@toke.dk> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: N-1FgB3oN1-2trJs7M_aR3lX3nQevEA3kZh_c6RbVlo_1749713136 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 7694EA000C X-Stat-Signature: u717hy94u5r8s1o9cqk94e1f37o935mw X-Rspam-User: X-HE-Tag: 1749713139-886827 X-HE-Meta: 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 56fak8Uw 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 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: Jakub Kicinski writes: > On Wed, 11 Jun 2025 09:35:45 -0700 Breno Leitao wrote: >> On Wed, Apr 09, 2025 at 12:41:37PM +0200, Toke H=C3=B8iland-J=C3=B8rgens= en wrote: >> > Fixes: ff7d6b27f894 ("page_pool: refurbish version of page_pool code")= =20 >>=20 >> Do you have plan to backport this fix to LTS kernels? I am getting some >> of these crashes on older kernel, and I am curious if there are plans to >> backport this to LTS kernels. > > I think it's worth disclosing that the crashes we see are in error > recovery on unstable HW. My vote would be to keep this out of stable > until it reaches at least one final release. Hmm, okay, guess we should ask Sasha to drop these, then? https://lore.kernel.org/r/20250610122811.1567780-1-sashal@kernel.org https://lore.kernel.org/r/20250610120306.1543986-1-sashal@kernel.org -Toke