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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-429952cb7e8sm14428346f8f.19.2025.10.27.05.44.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Oct 2025 05:44:24 -0700 (PDT) Message-ID: Date: Mon, 27 Oct 2025 13:44:23 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 2/6] hw/sd/sdcard: Allow user-instantiated eMMC Content-Language: en-US To: =?UTF-8?Q?Daniel_P=2E_Berrang=C3=A9?= Cc: Jan Kiszka , qemu-devel , Bin Meng , qemu-block@nongnu.org, Ilias Apalodimas , =?UTF-8?Q?Alex_Benn=C3=A9e?= , =?UTF-8?Q?Jan_L=C3=BCbbe?= , Jerome Forissier References: <90fc6201696fcf0e5fd0493365bc32b217aa9d6e.1760702638.git.jan.kiszka@siemens.com> <9d287284-1cb2-4126-b7d7-9c57b32ce408@linaro.org> From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::429; envelope-from=philmd@linaro.org; helo=mail-wr1-x429.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 27/10/25 13:35, Daniel P. Berrangé wrote: > On Mon, Oct 27, 2025 at 01:23:56PM +0100, Philippe Mathieu-Daudé wrote: >> On 27/10/25 12:55, Daniel P. Berrangé wrote: >>> On Fri, Oct 17, 2025 at 02:03:54PM +0200, Jan Kiszka wrote: >>>> From: Jan Kiszka >>>> >>>> Enable user-instantiation so that PCI-attached eMMCs can be created for >>>> virt machines, for QA purposes for the eMMC model itself and for complex >>>> firmware/OS integrations using the upcoming RPMB partition support. >>> >>> IIUC, the 'emmc' device wants an 'sd-bus' but this commit talks about >>> it being PCI-attached ? >> >> Sigh, it should not, but it got introduced this way and we didn't >> have time / energy / good reason to rework the code, which currently >> just works. >> >> SD / MMC cards -> plugged over external SD bus >> >> embedded MMC cards -> no SD bus, directly mmio-mapped. >> >>> >>> Can you elaborate on / illustrate the usage example for an end user ? >> >> Saving time by testing virtual hardware, without having to implement a >> real model. > > Ok, more specifically, what are the suggested QEMU command line > args to make use of this with PCI ? See patch #6 documentation: + -drive file=emmc.img,if=none,format=raw,id=emmc-img + -device sdhci-pci + -device emmc,drive=emmc-img,boot-partition-size=1048576,rpmb-partition-size=2097152