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From: Alyssa Ross <hi@alyssa.is>
To: Thomas Leonard <talex5@gmail.com>
Cc: discuss@spectrum-os.org
Subject: Re: Using virtio-gpu instead of virtwl
Date: Wed, 16 Mar 2022 16:54:57 +0000	[thread overview]
Message-ID: <20220316165457.rhowkmzcrawyygpn@eve> (raw)
In-Reply-To: <CAG4opy8-WAJb2ZNbnhr8RpTw_V=up_zdOn3Hd-s=R5gKB91WBA@mail.gmail.com>

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> I tried running with `crosvm --gpu`, but after `modprobe virtio-gpu`,
> crosvm crashed with:
>
> [   31.326763] Invalid ELF header magic: != ELF
> [   31.331450] [drm] pci: virtio-gpu-pci detected at 0000:00:07.0
> [   31.333020] [drm] Host memory window: 0x200000000 +0x200000000
> [   31.333983] [drm] features: +virgl -edid +resource_blob +host_visible
> [   31.333984] [drm] features: +context_init
> [   31.337289] [drm] number of scanouts: 1
> [   31.337938] [drm] number of cap sets: 1
> [ERROR:src/linux.rs:3264] child pcivirtio-gpu (pid 63446) died: signo
> 17, status 11, code 2
> [ERROR:devices/src/proxy.rs:212] failed write to child device process
> pcivirtio-gpu: failed to send packet: Broken pipe (os error 32)
>
> Then I tried with `--gpu=backend=2d` and that didn't crash, but
> instead opened a window showing some bootloader stuff. I now have
> /dev/dri/{card0, renderD128} devices, so I guess the next step is
> figuring out what they do!

When I've previously attempted this, I had some crosvm thread crash with
a seccomp violation because it tried to log something.  If you
--disable-sandbox, it might work or at least give you a clearer error
message.

> > Good luck!  Let me know if I can help with anything else.
>
> If you happen to know of any documentation, that would be great. But I
> guess I probably just need to spend a load of time reading crosvm,
> Linux, and Sommelier source code.

There might be some helpful stuff in the Mesa repo as well, because lots
of the latest graphics stuff is being done for crosvm.  A quick grep
found me the Venus (Vulkan over virtio-gpu) documentation, which
describes testing with crosvm, and the script they use to run crosvm in
CI.  It also reminded me that there are two different virgl
implementations in crosvm, virgl_renderer and virgl_renderer_next.  I
think last time I tried I had better luck with virgl_renderer.  You can
set buildFeatures in the Nix expression to experiment with them.

I hope some of that's helpful.  I really wish I'd taken better notes
the one time I got this to work.

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  reply	other threads:[~2022-03-16 16:55 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-05 19:27 New user getting started questions Thomas Leonard
2021-01-05 20:09 ` Michael Raskin
2021-01-06  7:04   ` Alyssa's break Alyssa Ross
2021-01-06  9:11     ` Michał "rysiek" Woźniak
2021-01-06  7:00 ` New user getting started questions Alyssa Ross
2021-01-06 15:56   ` Thomas Leonard
2021-01-07 11:38     ` Thomas Leonard
2021-01-07 15:33     ` Thomas Leonard
2021-01-14 12:29     ` Alyssa Ross
2021-01-14 12:51       ` Alyssa Ross
2021-01-20 13:04         ` Thomas Leonard
2021-01-27 17:31           ` Thomas Leonard
2021-03-07 12:52             ` Thomas Leonard
2021-03-09 16:59               ` Qubes-lite With KVM and Wayland Alyssa Ross
2021-03-10 14:19                 ` Thomas Leonard
2021-03-10 22:34                   ` Alyssa Ross
2021-03-09 16:25             ` New user getting started questions Alyssa Ross
2021-03-13  7:21               ` Thomas Leonard
2021-03-13 13:52                 ` Alyssa Ross
2021-10-30 12:58                 ` Thomas Leonard
2021-11-03 11:36                   ` Alyssa Ross
2021-11-03 18:27                     ` Thomas Leonard
2021-11-10 12:58                       ` Alyssa Ross
2021-11-10 12:00                         ` Thomas Leonard
2021-11-11 11:09                           ` Alyssa Ross
2021-11-11 16:12                             ` Thomas Leonard
2021-11-12 10:47                               ` Alyssa Ross
2022-03-13 15:08                         ` Thomas Leonard
2022-03-15 14:06                           ` Alyssa Ross
2022-03-15 20:23                             ` Alyssa Ross
2022-03-16 16:18                               ` Using virtio-gpu instead of virtwl Thomas Leonard
2022-03-16 16:54                                 ` Alyssa Ross [this message]
2022-03-21 12:10                                 ` Thomas Leonard
2022-03-21 16:05                                   ` Alyssa Ross
2022-03-22 11:08                                     ` Thomas Leonard
2022-03-22 11:16                                       ` Alyssa Ross
2022-03-22 20:05                                         ` Thomas Leonard
2022-04-06 12:19                                           ` Thomas Leonard
2022-04-13 17:12                                             ` Thomas Leonard
2022-04-14 13:57                                               ` Alyssa Ross
2022-04-19 12:58                                                 ` Thomas Leonard
2022-04-19 12:01                                                   ` Alyssa Ross
2022-05-15 15:20                                                 ` Thomas Leonard
2022-05-16 11:55                                                   ` Alyssa Ross
2022-05-18  9:55                                                     ` Thomas Leonard
2022-06-05 16:29                                                       ` Thomas Leonard
2022-08-09 12:00                                     ` Alyssa Ross
2022-10-10 15:16                                       ` Thomas Leonard
2022-10-10 16:53                                         ` Alyssa Ross

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