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[142.68.80.239]) by smtp.gmail.com with ESMTPSA id p26-20020a9d695a000000b006dc87c016e4sm386606oto.60.2024.01.26.11.51.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Jan 2024 11:51:44 -0800 (PST) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1rTSEo-009eo3-TV; Fri, 26 Jan 2024 15:51:42 -0400 Date: Fri, 26 Jan 2024 15:51:42 -0400 From: Jason Gunthorpe To: Diogo Ivo Cc: thierry.reding@gmail.com, vdumpa@nvidia.com, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, jonathanh@nvidia.com, baolu.lu@linux.intel.com, jsnitsel@redhat.com, jroedel@suse.de, linux-tegra@vger.kernel.org, iommu@lists.linux.dev, regressions@lists.linux.dev Subject: Re: [REGRESSION] Failed buffer allocation in Tegra fbdev Message-ID: <20240126195142.GC50608@ziepe.ca> References: <20240123151508.GR50608@ziepe.ca> <1754c86c-704e-4c80-93c3-1b75a9a247df@tecnico.ulisboa.pt> Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1754c86c-704e-4c80-93c3-1b75a9a247df@tecnico.ulisboa.pt> On Tue, Jan 23, 2024 at 06:44:42PM +0000, Diogo Ivo wrote: > Yes, this does fix the issue! Thanks, just trying to pin down how the fix should be.. What kind of kernel are you running, Is this 32 bit? Is CONFIG_ARM_DMA_USE_IOMMU set? Is CONFIG_IOMMU_DMA set? I'm guessing yes/yes/no? Jason