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Fri, 11 Jun 2021 05:04:23 -0700 (PDT) Date: Fri, 11 Jun 2021 14:05:58 +0200 From: Thierry Reding To: Krzysztof Kozlowski , Will Deacon Subject: Re: [PATCH v3 0/9] arm64: tegra: Prevent early SMMU faults Message-ID: References: <20210603164632.1000458-1-thierry.reding@gmail.com> <162339404910.6729.11145661496228624827.b4-ty@canonical.com> MIME-Version: 1.0 In-Reply-To: <162339404910.6729.11145661496228624827.b4-ty@canonical.com> User-Agent: Mutt/2.0.7 (481f3800) (2021-05-04) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210611_050428_033687_9BA632FC X-CRM114-Status: GOOD ( 19.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Joerg Roedel , iommu@lists.linux-foundation.org, Jon Hunter , Nicolin Chen , linux-tegra@vger.kernel.org, Robin Murphy , linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============1328487904070842632==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============1328487904070842632== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="0FeCZruiAMHvtV86" Content-Disposition: inline --0FeCZruiAMHvtV86 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jun 11, 2021 at 08:48:00AM +0200, Krzysztof Kozlowski wrote: > On Thu, 3 Jun 2021 18:46:23 +0200, Thierry Reding wrote: > > this is a set of patches that is the result of earlier discussions > > regarding early identity mappings that are needed to avoid SMMU faults > > during early boot. > >=20 > > The goal here is to avoid early identity mappings altogether and instead > > postpone the need for the identity mappings to when devices are attached > > to the SMMU. This works by making the SMMU driver coordinate with the > > memory controller driver on when to start enforcing SMMU translations. > > This makes Tegra behave in a more standard way and pushes the code to > > deal with the Tegra-specific programming into the NVIDIA SMMU > > implementation. > >=20 > > [...] >=20 > Applied, thanks! >=20 > [1/9] memory: tegra: Implement SID override programming > (no commit info) > [2/9] dt-bindings: arm-smmu: Add Tegra186 compatible string > commit: 4287861dca9d77490ee50de42aa3ada92da86c9d >=20 > [3/9] - skipped >=20 > [4/9] iommu/arm-smmu: tegra: Detect number of instances at runtime > commit: 7ecbf253f8d64c08de28d16a66e3abbe873f6c9f > [5/9] iommu/arm-smmu: tegra: Implement SID override programming > commit: 8eb68595475ac5fcaaa3718a173283df48cb4ef1 > [6/9] iommu/arm-smmu: Use Tegra implementation on Tegra186 > commit: 2c1bc371268862a991a6498e1dddc8971b9076b8 I've applied patches 7-9 to the Tegra tree. Thanks Krzysztof and Will for your help in getting this over the finish line! 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