RE: Balloon pressuring page cache

On Wednesday, February 5, 2020 5:23 PM, David Hildenbrand wrote:

So, if you run a TCG guest and use it with free page reporting, the race is
possible? So the correctness depends on two dirty bitmaps in the hypervisor
and how they interact. wow this is fragile.

Not sure how TCG tracks the dirty bits. But In whatever implementation, the hypervisor should have
already dealt with the race between he current round and the previous round dirty recording.
(the race isn't brought by this feature essentially)

Best,
Wei