Re: virtio: Add memory statistics reporting to the balloon driver

[Rusty Russell]

On Tue, 10 Nov 2009 03:02:06 am Adam Litke wrote:
> A simpler approach is to collect memory statistics in the virtio
> balloon driver and communicate them to the host via the device config space.

There are two issues I see with this.  First, there's an atomicity problem
since you can't tell when the stats are consistent.  Second, polling is
ugly.

A stats vq might solve this more cleanly?
Rusty.
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