Messages in this thread | | | Date | Mon, 13 May 2013 15:10:19 -0400 | From | Rik van Riel <> | Subject | Re: [RFC 2/2] virtio_balloon: auto-ballooning support |
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On 05/13/2013 11:35 AM, Michael S. Tsirkin wrote: > On Mon, May 13, 2013 at 11:22:58AM -0400, Rik van Riel wrote:
>> I believe the Google patches still included some way for the >> host to initiate balloon inflation on the guest side, because >> the guest internal state alone is not enough to see when the >> host is under memory pressure. >> >> I discussed the project with the Google developers in question >> a little over a year ago, but I do not remember whether their >> pressure notification went through qemu, or directly from the >> host kernel to the guest kernel... > > So increasing the max number of pages in balloon > indicates host memory pressure to the guest? > Fair enough but I wonder whether there's a way to > make it more explicit in the interface, somehow.
There may be a better way to do this, but I am really not sure what that would be. What properties would you like to see in the interface? What kind of behaviour are you looking for?
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