Hi Alex, Em Tue, 27 May 2025 23:03:39 +0900 Alexandre Courbot <gnu...@gmail.com> escreveu:
> > > > Btw, I was looking at: > > > > > > > > https://github.com/chromeos/virtio-media > > > > > > > > (I'm assuming that this is the QEMU counterpart, right?) > > > > > > crosvm actually, but QEMU support is also being worked on. > > > > Do you have already QEMU patches? The best is to have the Kernel driver > > submitted altogether with QEMU, as Kernel developers need it to do the > > tests. In my case, I never use crosvm, and I don't have any Chromebook > > anymore. > > IIRC Albert Esteve was working on this, maybe he can share the current status. Any news regards to it? > Note that crosvm does not require a Chromebook, you can build and run > it pretty easily on a regular PC. I have put together a document to > help with that: > > https://github.com/chromeos/virtio-media/blob/main/TRY_IT_OUT.md I started looking on it today. Already installed crossvm (I had to install libcap-devel to build it). Still, I'm not familiar with crossvm, which is a little be painful. In particular, how can I enable network on it and speedup it? With suggested parameters, it picked only one CPU, and very few memory on it: # cat /proc/cpuinfo|grep processor processor : 0 # free total used free shared buff/cache available Mem: 221876 34780 139712 272 56096 187096 Swap: 0 0 0 I'd like to be able to compile things on it and use ssh/scp. So, the VM needs more CPUs, more memory, more network and GPU. Btw, on a quick test with v4l2-compliance, something looks weird: I started a camera application at the host. Still, v4l2-compliance said successfully excecuted mmap: Streaming ioctls: test read/write: OK (Not Supported) test blocking wait: OK test MMAP (no poll): OK test MMAP (select): OK Vide[2025-06-17T08:44:49.177972817+00:00 ERROR virtio_media::ioctl] VIDIOC_REQBUFS: memory type DmaBuf is currently unsupported [2025-06-17T08:44:49.178164554+00:00 ERROR virtio_media::ioctl] VIDIOC_REQBUFS: memory type DmaBuf is currently unsupported o Capturtest MMAP (epoll): OK test USERPTR (no poll): OK (Not Supported) test USERPTR (select): OK (Not Supported) test DMABUF (no poll): OK (Not Supported) test DMABUF (select): OK (Not Supported) Which doesn't make any sense, as the host OS should not allow access to mmap while streaming. Thanks, Mauro
