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[216.228.112.22]) by smtp.gmail.com with ESMTPSA id y7sm4824167pja.25.2021.04.01.01.57.49 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Thu, 01 Apr 2021 01:57:50 -0700 (PDT) Date: Thu, 1 Apr 2021 01:55:49 -0700 From: Nicolin Chen To: Dmitry Osipenko Cc: Thierry Reding , Joerg Roedel , Jonathan Hunter , Krishna Reddy , Will Deacon , iommu@lists.linux-foundation.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, guillaume.tucker@collabora.com Subject: Re: [PATCH v1 2/2] iommu/tegra-smmu: Revert workaround that was needed for Nyan Big Chromebook Message-ID: <20210401085549.GA31146@Asurada-Nvidia> References: <20210328233256.20494-1-digetx@gmail.com> <20210328233256.20494-2-digetx@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210328233256.20494-2-digetx@gmail.com> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 29, 2021 at 02:32:56AM +0300, Dmitry Osipenko wrote: > The previous commit fixes problem where display client was attaching too > early to IOMMU during kernel boot in a multi-platform kernel configuration > which enables CONFIG_ARM_DMA_USE_IOMMU=y. The workaround that helped to > defer the IOMMU attachment for Nyan Big Chromebook isn't needed anymore, > revert it. Sorry for the late reply. I have been busy with downstream tasks. I will give them a try by the end of the week. Yet, probably it'd be better to include Guillaume also as he has the Nyan platform.