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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-477c0d85360sm173323955e9.15.2025.11.23.23.18.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 23 Nov 2025 23:18:59 -0800 (PST) Message-ID: <351ebd4d-8ec6-43fe-b308-a0e54801a33b@linaro.org> Date: Mon, 24 Nov 2025 08:18:58 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: qemu-system-sh4eb build has something hinky in the ethernet Content-Language: en-US To: Geert Uytterhoeven , Rob Landley , QEMU Developers Cc: Thorsten Glaser , Michael Tokarev , security@debian.org, Debian QEMU Team , debian-ports@lists.debian.org References: <6abe2750-5e2c-43a1-be57-1dc2ccabdd91@tls.msk.ru> <119d5858-52f4-ce1b-9ee7-9615ce2054b9@debian.org> <79f14fef-123f-4938-b069-10f07e7d0405@landley.net> From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::32b; envelope-from=philmd@linaro.org; helo=mail-wm1-x32b.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 1/9/25 09:47, Geert Uytterhoeven wrote: > On Sun, 24 Aug 2025 at 20:40, Rob Landley wrote: >> Anyway, this works fine on little endian, but the qemu-system-sh4eb >> build has something hinky in the ethernet, I haven't tackled it myself >> because I don't know whether the device emulation or the driver is >> what's missing an endian swap. (I don't want to fix it the "wrong way", > > That is using sh_eth, right? > > Last time I tried booting a big-endian ARM kernel on R-Car M2-W, > the Linux kernel booted fine, except for Ethernet. So sh_eth is definitely > not big-endian clean. qemu-system-sh4{eb} only emulates the R2D+ board, which AFAIK provides ethernet via a RTL8139 over PCI. While old, RTL8139 is very tested and expected to have endianness well handled. > > [*] I didn't have a big-endian userspace. > > Gr{oetje,eeting}s, > > Geert >