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2322 discussions

Virt_qemu_arm_v8a replacement of ROM system with RAM system.
by Devashish Dewangan cs21m017 07 Feb '23

07 Feb '23

Dear Genodians, I am working with arm_v8a to run it on qemu. I found out that virt_qemu_arm_v8a doesn't support the ROM system and the solution to it is that I can use the RAM system provided in Genode. Can you guide me to replace the ROM system with the RAM system. Below is the error I got while trying to run the sculpt.img -- Regards, Devashish Dewangan CS21M017

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Testing sculpt image on pinephone
by Sagar Acharya 06 Feb '23

06 Feb '23

I flashed an sd card on Pinephone Beta edition 3GB. It booted into GUI nicely I also tried flashing it on internal mmc of 32GB but it doesn't bootup. Has anyone managed to boot up from internal memory? I don't see how it should be any different! Thanking you Sagar Acharya https://designman.org

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Running genode on QEMU having board support of raspberry pi for arm_v8.
by DHIRAJ PRAJAPATI 06 Feb '23

06 Feb '23

Dear genodians, As I saw that you already worked on the Raspberry for Genode framework,I wanted to ask about that because I am also working on it. I am trying the port genode having the arm_v8a support of Raspberry board to run that on QEMU. So I need some guidance from you on how to start and what should be the roadmap for generating the boot image (.img file ) having arm 64 architecture which can be booted and run on QEMU. It would be very helpful for me if you guide me to port genode on QEMU for arm_v8a. Regards, DHIRAJ.

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Restarting siblings vs. restarting nieces
by Sid Hussmann 06 Feb '23

06 Feb '23

Dear Genodians, I noticed a behavior that I would like to understand. Let's assume we have the following parent-child relationship of a sub-system, omitting some ancestors for simplicity: ``` . └── init ├── fs │ ├── init │ │ └── rump │ ├── fs_mgr │ └── report_rom ├── fs_client1 └── fs_client2 ``` In this example, the config for the first `init` is written via the depot query/deploy mechanism. Thus, `fs`, `fs_client1`, and `fs_client2` are pkg archives. The `runtime` file from pkg archive `fs` contains a management component `fs_mgr` that generates an `init` config which starts a `vfs` server with a `rump` plugin within that `init`. For context, we use the `fs_mgr` to instrument it to start `fsck` or `mkfs` depending on its configuration. But that's not relevant right now. Let's also assume the routing is valid so that `fs_client1` and `fs_client2` are up and running, and they both consume the `File_system` session provided by `rump`. Now to my observation: When I restart `fs` by incrementing its version attribute in the deploy file, `fs`, `fs_client1`, and `fs_client2` all get restarted. That is what I would expect. However, the behavior is different when I instrument the `fs_mgr` to restart `rump`. Most of the time, both `fs_client1` and `fs_client2` don't seem to notice. Is this behavior by design? Is `init` designed to behave differently regarding client/server dependency when siblings get restarted vs. when a niece is restarted? Is there a way to instrument `fs_mgr` to write an `init` config, so that `fs_client1` and `fs_client2` get restarted? Granted, I observed this in a more complex scenario. I once had the following errors when restarting `rump` on `arm_v8a/base-hw`: ``` Kernel: init -> init -> fs_client1 -> ep: cannot send to unknown recipient ... Kernel: Cpu 0 error: re-entered lock. Kernel exception?! ``` Would it make sense for me to create a simplified scenario of it to dig into this behavior further? Kind regards, Sid

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Genode on ARM Systems
by Divya Sharma 06 Feb '23

06 Feb '23

hello, genodians, I want to generate an image file of genode for ARM Systems. but doesn't have ARM hardware so need to run the image file on qemu so can you suggest what is the best way to do that? or pls suggest all possible ways thanks and regards Divya

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vbox6-block: hang in linux kernel boot
by Dan Connolly 31 Jan '23

31 Jan '23

As I mentioned, I got vbox6-block to boot using 4 block devices. It boots grub, and I can transfer control to Ubuntu 22.04. I used recovery mode to get a little more info about what's going on. Then after a bit it hangs. The genode logs show lots of "preemption during measurement" warnings. The linux kernel log shows stuff like... start_kernel+0x49a/0x4ca ... Spectre V2 : ... Filling RSB on VMEXIT ... smpboot: CPU0: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz ... and then... nothing. suggestions? For more config, logs and a screenshot, see... https://github.com/dckc/madmode-blog/issues/49#issuecomment-1409922456 -- Dan Connolly http://www.madmode.com/

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vbox6-block: no policy defined for label 'vbox6-block -> block0'
by Dan Connolly 31 Jan '23

31 Jan '23

I'm struggling to understand how to configure the vbox6-block component. All seems to go well until... [runtime -> ahci-0.part_block] Warning: no policy defined for label 'vbox6-block -> block0' I read up on component configuration; I have a better understanding of it now. https://genode.org/documentation/genode-foundations/22.05/components/Compon… But I don't understand the details of how to configure block services in a launcher. For detailed logs, my launcher config, etc., see: https://github.com/dckc/madmode-blog/issues/49#issuecomment-1407819827 p.s. I got falkon and screenshot working, but in that same issue 49, note problem reports w.r.t - shutdown / acpica - ssh_client - sneakernet (usb_drv) -- Dan Connolly http://www.madmode.com/

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vbox6-block: AddRef failed at MachineWrap.cpp(11269)
by Dan Connolly 30 Jan '23

30 Jan '23

Do these symptoms look familiar? Any suggestions on how to fix or further diagnose? [runtime -> vm-block -> vbox] main !!Assertion Failed!! [runtime -> vm-block -> vbox] main Expression: state <= 1 && ( (state == 0 && count == 0) || (state == 1 && count < PR_UINT32_MAX/2)) [runtime -> vm-block -> vbox] main Location : /home/alex/genode/sculpt/depot/alex-ab/src/vbox6/2022-11-21/src/virtualbox6/VBoxAPIWrap/MachineWrap.cpp(11269) virtual nsrefcnt MachineWrap::AddRef() I'm using a local variant of https://depot.genode.org/alex-ab/pkg/vbox6-block/ . For my exact launcher and runtime, as well as more log context, see https://github.com/dckc/madmode-blog/issues/49#issuecomment-1408787710 -- Dan Connolly http://www.madmode.com/

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compiling Sculpt
by Johnny Nunez 30 Jan '23

30 Jan '23

Hello everyone, Is it possible to compile Sculpt using kernel=Linux board=pc ? I am getting this error: checking configuration syntax CHECK init generating initrd cp: cannot stat 'genode/initramfs': No such file or directory while executing "exec cp genode/initramfs init" (procedure "build_initrd" line 16)

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vm launcher config for usb devices rom?
by Dan Connolly 29 Jan '23

29 Jan '23

I'm making a vm launcher file; what do I put in there to make the ... ROM (usb devices) -> usb devices rom ... connection noted in https://genodians.org/jschlatow/2022-10-27-fresh-vm-on-sculpt ? I can't configure it with the GUI because the vertical resolution on this ThinkPad T430 is only 900 pixels and the vm config menu is too tall. I see the screen size limitation is known... > That's a known limitation. I agree that it is inconvenient, so I keep it > in the back of my mind. For regular Sculpt power users, it is not really > a pressing issue since the /config/deploy file can be edited directly > also (the graph is just a fancy frontend for editing this file)." -- https://lists.genode.org/pipermail/users/2021-February/007521.html But not being a Sculpt power user, I could use some help. If I were able to use a larger screen and use the graph, what would I see in my vm config? For reference, the log starts out fine: [runtime -> vm -> vbox] main Log created: 2023-01-28T06:30:54.002000000Z ... [runtime -> vm -> vbox] 0x4222000 .. 0x4245fff: VBoxSharedFolders.so [runtime -> nic_router] [default] NIC sessions: 1 but then shows this error: [runtime -> vm -> vbox] Error: ROM-session creation failed (ram_quota=6144, cap_quota=3, label="usb_devices") [runtime -> vm -> vbox] Error: Could not open ROM session for "usb_devices" [runtime -> vm -> vbox] Error: Uncaught exception of type 'Genode::Rom_connection::Rom_connection_failed' [runtime -> vm -> vbox] Warning: abort called - thread: EMT-0 -- Dan Connolly http://www.madmode.com/

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