On Tue, Apr 02, 2019 at 04:43:03PM -0700, Alexander Duyck wrote: > Yes, but hopefully it should be a small enough amount that nobody will > notice. In many cases devices such as NICs can consume much more than > this regularly for just their Rx buffers and it is not an issue. There > has to be a certain amount of overhead that any given device is > allowed to consume. If we contain the balloon hinting to just 64M that > should be a small enough amount that nobody would notice in practice. I am still inclined to add ability for balloon to exit to host on OOM if any hints are outstanding. If nothing else will be helpful for stats. -- MST
