Re: [PATCH v16.1 6/9] virtio-balloon: Add support for providing free page reports to host

[David Hildenbrand]

> Am 11.02.2020 um 17:33 schrieb Alexander Duyck <alexander.h.duyck@xxxxxxxxxxxxxxx>:
> 
> ïOn Tue, 2020-02-11 at 16:13 +0100, David Hildenbrand wrote:
>>>> AFAIKs, the guest could inflate/deflate (esp. temporarily) and
>>>> communicate via "actual" the actual balloon size as he sees it.
>>> 
>>> OK so you want hinted but unused pages counted, and reported
>>> in "actual"? That's a vmexit before each page use ...
>> 
>> No, not at all. I rather meant, that it is unclear how
>> inflation/deflation requests and "actual" *could* interact. Especially
>> if we would consider free page reporting as some way of inflation
>> (+immediate deflation) triggered by the guest. IMHO, we would not touch
>> "actual" in that case.
>> 
>> But as I said, I am totally fine with keeping it as is in this patch.
>> IOW not glue free page reporting to inflation/deflation but let it act
>> like something different with its own semantics (and document these
>> properly).
>> 
> 
> Okay, so before I post v17 am I leaving the virtio-balloon changes as they
> were then?

Iâd say yes :)