VirtIO-MMIO on MMU-less System

Pawel Moll
Tue, 28 Oct 2014 16:48:13 -0000

On Tue, 2014-10-28 at 16:42 +0000, Christopher Covington
wrote:
> Just out of curiosity, could VirtIO-MMIO peripherals work on an MMU-less
> system, such as a hypothetical M-flavor QEMU TCG virt machine?

The interface is using physical addresses (or physical page numbers), so
MMU or not - it doesn't care.

Now, whether the existing implementation of the drivers (or host-side
implementation of the virtoo device) would work, that's another
question. I see nothing in virtio-mmio driver that clearly wouldn't
work, but you never know...

Pawel