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[94.29.39.224]) by smtp.googlemail.com with ESMTPSA id 127sm8831243lfl.29.2020.03.23.12.59.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 23 Mar 2020 12:59:53 -0700 (PDT) Subject: Re: [PATCH v3 03/10] partitions: Introduce NVIDIA Tegra Partition Table To: =?UTF-8?B?TWljaGHFgiBNaXJvc8WCYXc=?= Cc: Jens Axboe , Thierry Reding , Jonathan Hunter , David Heidelberg , Peter Geis , Stephen Warren , Nicolas Chauvet , Ulf Hansson , Adrian Hunter , Billy Laws , linux-tegra@vger.kernel.org, linux-block@vger.kernel.org, Andrey Danin , Gilles Grandou , Ryan Grachek , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org References: <20200323163431.7678-1-digetx@gmail.com> <20200323163431.7678-4-digetx@gmail.com> <20200323191748.GB30585@qmqm.qmqm.pl> From: Dmitry Osipenko Message-ID: <67140755-c829-5c58-3fbf-efd496e225df@gmail.com> Date: Mon, 23 Mar 2020 22:59:52 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200323191748.GB30585@qmqm.qmqm.pl> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 23.03.2020 22:17, Michał Mirosław пишет: > On Mon, Mar 23, 2020 at 07:34:24PM +0300, Dmitry Osipenko wrote: >> All NVIDIA Tegra devices use a special partition table format for the >> internal storage partitioning. Most of Tegra devices have GPT partition >> in addition to TegraPT, but some older Android consumer-grade devices do >> not or GPT is placed in a wrong sector, and thus, the TegraPT is needed >> in order to support these devices properly in the upstream kernel. This >> patch adds support for NVIDIA Tegra Partition Table format that is used >> at least by all NVIDIA Tegra20 and Tegra30 devices. >> >> Signed-off-by: Dmitry Osipenko >> --- >> arch/arm/mach-tegra/tegra.c | 54 ++++ > [...] > > Please split off this part and make the information available to > userspace (pt_addr + pt_size) if found. This would make it easier > to support use the partition table later in initrd instead. Please clarify what do you mean by "use the partition table later in initrd instead".