Virtualization of Application Software Stacks to Lower TCO Costs
Virtualization of a MultiMedia Box Software Stack Using QEMU/KVM and VFIO on ARMv8 Platforms
Virtual Open Systems enables the abstraction of a complete MultiMedia Box (MMB) software stack by implementing an MMB virtualization layer. Moving MMB core functionalities within Virtual Machines (VM) greatly improves the maintainability of the system, simplifies its future migration to new hardware platforms, thus lowering the total cost of production and ownership (TCP, TCO), the cost of maintenance and software updates, while enhancing the overall security.
The concept showcased in this video demonstration consists of two KVM virtual machines running on an ARMv8 platform, based on a multicore heterogeneous multimedia SoC. High performance is guaranteed by the usage of the device pass-through technique, which exposes some key multimedia devices to guest systems, allowing the virtual machine to have a full control of the display and the GPU at nearly a native performance; for instance, from within the VM it's possible to decode 4K video streams displayed on a 4K monitor.
Such a high performance implementation has been achieved by heavily modifying QEMU and VFIO to overcome limitations of their respective upstream code that prevented an efficient pass-through of the devices.
The overall virtualized MMB system architecture, as depicted in the following illustration, foresees two virtual machines (VM1 and VM2), VM2 providing all the networking functionalities to VM1 which instead implements the multimedia functionalities.
Virtualized MultiMedia box: system architecture preserving high performance, lowering TCO
VM1 has full control of the display and also pilots the remote control which can be used by the user to navigate the UI user interface. In VM1, for the purpose of the demonstration, two operating systems are supported, one is a Linux distribution featuring a custom set-top box interface, while the second is Android TV.
In this video demonstration the following multimedia virtualized streaming functionalities are showcased:
- Display of 4K video content from media files
- Display of 4K video streaming from a satellite DVB-S tuner
- Display of 4K video streaming from YouTube
- 3D OpenGL rendering
With this demonstration, Virtual Open Systems on one side exposes once more its rare-to-find know-how and products to integrate virtualization technologies in new market segments spanning from multimedia consumer gateway to Industrial IoT, through embedded systems up to mixed-critical Automotive; on the other side advocates the huge TCO and maintenance cost savings which can be achieved in these market segments by a competent usage of virtualization technologies, as they can be served and provided by Virtual Open Systems.
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