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[79.131.11.197]) by smtp.gmail.com with ESMTPSA id x16sm33903820wmj.4.2019.07.24.01.54.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Jul 2019 01:54:30 -0700 (PDT) Date: Wed, 24 Jul 2019 11:54:27 +0300 From: Ilias Apalodimas To: David Miller Subject: Re: [PATCH net-next 3/3] net: stmmac: Introducing support for Page Pool Message-ID: <20190724085427.GA10736@apalos> References: <6c769226-bdd9-6fe0-b96b-5a0d800fed24@arm.com> <8756d681-e167-fe4a-c6f0-47ae2dcbb100@nvidia.com> <20190723.115112.1824255524103179323.davem@davemloft.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190723.115112.1824255524103179323.davem@davemloft.net> User-Agent: Mutt/1.5.24 (2015-08-30) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190724_015433_352147_76E4694C X-CRM114-Status: UNSURE ( 9.40 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jose.Abreu@synopsys.com, Joao.Pinto@synopsys.com, alexandre.torgue@st.com, maxime.ripard@bootlin.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, jonathanh@nvidia.com, wens@csie.org, linux-arm-kernel@lists.infradead.org, mcoquelin.stm32@gmail.com, linux-tegra@vger.kernel.org, peppe.cavallaro@st.com, robin.murphy@arm.com, linux-stm32@st-md-mailman.stormreply.com, lists@bofh.nu Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi David, > From: Jon Hunter > Date: Tue, 23 Jul 2019 13:09:00 +0100 > > > Setting "iommu.passthrough=1" works for me. However, I am not sure where > > to go from here, so any ideas you have would be great. > > Then definitely we are accessing outside of a valid IOMMU mapping due > to the page pool support changes. Yes. On the netsec driver i did test with and without SMMU to make sure i am not breaking anything. Since we map the whole page on the API i think some offset on the driver causes that. In any case i'll have another look on page_pool to make sure we are not missing anything. > > Such a problem should be spotted with swiommu enabled with debugging. Thanks /Ilias _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel