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[144.178.202.138]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-57d30413446sm509122a12.31.2024.06.20.23.48.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 20 Jun 2024 23:48:43 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Fri, 21 Jun 2024 08:48:43 +0200 Message-Id: To: "Konrad Dybcio" , "Dmitry Baryshkov" , "Rob Clark" Cc: "Marc Gonzalez" , "Marijn Suijten" , "Abhinav Kumar" , "MSM" , , "Sean Paul" , "Bryan O Donoghue" , "Pierre-Hugues Husson" , "Arnaud Vrac" , "Bjorn Andersson" , "Jeffrey Hugo" Subject: Re: [PATCH] drm/msm: log iommu init failure From: "Luca Weiss" X-Mailer: aerc 0.17.0 References: <64ec16b9-c680-408c-b547-5debae2f7f87@freebox.fr> <717ee43e-41f5-4940-b404-c348812c84c9@linaro.org> In-Reply-To: <717ee43e-41f5-4940-b404-c348812c84c9@linaro.org> On Fri Jun 21, 2024 at 12:47 AM CEST, Konrad Dybcio wrote: > > > On 6/20/24 20:24, Dmitry Baryshkov wrote: > > On Thu, 20 Jun 2024 at 20:32, Rob Clark wrote: > >> > >> On Thu, May 30, 2024 at 2:48=E2=80=AFAM Marc Gonzalez wrote: > >>> > >>> On 16/05/2024 10:43, Marijn Suijten wrote: > >>> > >>>> On 2024-05-15 17:09:02, Marc Gonzalez wrote: > >>>> > >>>>> When create_address_space() fails (e.g. when smmu node is disabled) > >> > >> Note that smmu support is going to become a hard dependency with the > >> drm_gpuvm/VM_BIND conversion.. which I think means we should never get > >> far enough to hit this error path.. > >=20 > > Does that mean that we will lose GPU support on MSM8974? > > Yeah, that was brought up on #freedreno some time ago Also on MSM8226 which I also care about... Anyone at all knowledgable on IOMMU would be very welcome to help out with IOMMU support on these two platforms (and anything else that old?) in any case, since me and some other people have looked at this (on and off) for years but haven't gotten to any stable or usable point unfortunately. Regards Luca > > Konrad