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([2600:1700:e321:62f0:da43:aeff:fecc:bfd5]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-af9bc41af7csm9538000a12.76.2025.04.08.13.56.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Apr 2025 13:56:15 -0700 (PDT) Message-ID: <92fa62a8-88b5-40c0-947b-c35780497a0f@roeck-us.net> Date: Tue, 8 Apr 2025 13:56:14 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] Add property to support writing ERSTBA in high-low order To: Bernhard Beschow , =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org Cc: Richard Henderson , Peter Maydell References: <20250405140002.3537411-1-linux@roeck-us.net> <7ed5d213-9429-45c8-bbf3-6f3f841a2299@roeck-us.net> <7C5A41A1-38EE-4D22-8F84-6A5A3A2BDD82@gmail.com> <42a82455-7fa1-4890-a9e8-690fec3433c3@roeck-us.net> <9239BBD2-DCB8-4B97-9EAA-FFB06CAB660C@gmail.com> <89b70bdd-00e3-46ee-8810-099da032f485@roeck-us.net> <6A2167BC-910A-4801-8FB0-24C114EF5181@gmail.com> Content-Language: en-US From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::42f; envelope-from=groeck7@gmail.com; helo=mail-pf1-x42f.google.com X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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 4/8/25 12:57, Bernhard Beschow wrote: > > > Am 8. April 2025 16:09:58 UTC schrieb Guenter Roeck : >> On 4/6/25 11:08, Bernhard Beschow wrote: >> [ .. ] >> >>>>> Yeah, it works with Buildroot as described in the handbook. When I append `-netdev user,id=net0 -device virtio-net-pci,netdev=net0` on the cli I can `wget http://www.google.com` successfully. When I omit it there is no network connectivity. This is with a 6.6.23 vendor kernel. >>>>> >>>> >>>> I had no luck with virtio-net-pci. virtio-pci works for me, but I can not get real PCI devices >>>> (such as nvme or scsi adapters) to work. >>> >>> I now tested with the latest Buildroot recipe, changing to upstream kernel version 6.14 and using the defconfig. The `wget` command still works for me with virtio-net-pci. However, I can confirm that I need your xhci patches for the usb storage device to be detected. >>> >> >> Following up on this, my problem is that adding "-netdev user,id=net0 -device virtio-net-pci,netdev=net0" >> to the command line adds a _second_ Ethernet interface, in addition to the default one. >> This results in >> qemu-system-arm: warning: nic imx.enet.0 has no peer >> reported when qemu starts. > > I get this too when using virtio-net-pci successfully. > >> >> I can not get that second interface to work, probably because of some userspace issue. >> >> Anyway, I never see any interrupts on the virtual PCI interface. From /proc/interrupts: >> >> 277: 0 PCI-MSI 524288 Edge virtio0-config >> 278: 0 PCI-MSI 524289 Edge virtio0-input.0 >> 279: 0 PCI-MSI 524290 Edge virtio0-output.0 > > I get: > > 206: 0 0 0 0 PCI-MSI 524288 Edge virtio0-config > 207: 3 0 0 0 PCI-MSI 524289 Edge virtio0-input.0 > 208: 8 0 0 0 PCI-MSI 524290 Edge virtio0-output.0 > > Note that I'm using four CPUs, i.e. `-smp 4`. > I think I found it. Previously I needed to add .psci_conduit to struct arm_boot_info. No idea why; without it, the kernel would crash almost immediately. Now it seems that _adding_ that line causes the PCIe hiccup. Oh well :-(. Sorry for the noise. Guenter