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Weekly activity reports

This page contains weekly reports of the Virtual Open Systems activity about the "AGL Native VIRTIO phase 2" project.

week 21

gerrit reviews:
This week we started with a new version of 29407 (rust implementation of GPIO and RNG), adding CAN and addressing comments. Also we produce important patches for the adapter repository (29398 and 29398) and fixes at kernel side (29492) that aims to build both RefHW and qemu x86 targets. The review of the first one is ongoing, while the other three are now merged. Next is new version of 29407 (v4).

AWS task:
We started the investigations of meta-aws to understand where to put our fingers. The idea is to use EC2 AMI creation feature to build a linux image for AWS that contains virtio loopback binaries, drivers and adapter. Let us know if you have any additional comments or requests for this task.

Virtio-Console:
We established a communication between adapter / vhost-user-console backend. During this communication, the two user-space components exchange virtio features, vhost-user features, queue number, queue size, etc. but they do not exchange any data. During the sub-task, we develop vhost-user-console backend in order to define two simple receive/send queues and use this simple setup to exchange messages with the adapter. Also, the serial console is shown in vhost-device-console terminal and we added send/receive functionality code into vhost-user-console and multiport console feature. After the initial communication between adapter and vhost-user-console device, a new virtio-console (/dev/hvc0) device is being inserted successfully into the kernel. At that moment, by using "getty" for this new device ("hvc0"), messages are sent/received through virtio-console, virtio-loopback-transport, adapter, to vhost-user-console device and vice versa. This results in giving the ability to any user to login and have terminal access through vhost-device-console. The virtio-console multiport feature is added and initializes two additional control queues for the exchange of console console messages. Next week we plan to polish the code for finalization.

GPU:
The work focused on the integration of virtio-gpu.c/virtio-gpu-gl.c on the virtio-loopback-adapter and its dependent functions. Tested the SDL2/EGL window creation and frame update functionality using pre-recorder frames. Initial tests showed frame updates when the rendering API 'dpy_gfx_update()' is used. Continued on resolving structure dependencies from QEMU that are not ported to the adapter application. This is done in order to not pull all minor components from QEMU sources. Updated the virtio-gpu cursor event requests to dummy implementations since cursor support is not yet reached/tested. 
The next steps are to enable and test the handling of contrib/vhost-user-gpu requests related to the Window instantiation (SDL) and the frames update. Also, test the integration of virtio-gpu/gl devices in regard to the parent vhost-user-gpu device on virtio-loopback-adapter. The use-case testing compositor will be Weston.

week 20

gerrit reviews:
Egvirt feature changes (29408) was merged. Review for 29407 (rust implementation of GPIO, I2C, RNG and VSOCK) is ongoing and I hope it will be merged soon. Next we are going to start the activities to push the CAN device. In the meantime we are working to build the sound recipe (currently dealing with rust dependencies), and will come back to you next week.

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