Question about reduced memory by balloon driver (QEMU specific?)

[Henry lol]

Hi guys,

When a guest's memory is dynamically reduced with setMemory API (and
"balloon" QMP API), I'm wondering whether the virtio-balloon driver in the
guest is consuming such reduced memory.

If so, how can I see that the memory virtio-balloon is consuming?
and is it possible the virtio-balloon has such a huge memory even though
it's a kernel module??

Thanks,
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