On Wed, 15 May 2019 23:08:17 +0200 Halil Pasic <pasic@xxxxxxxxxxxxx> wrote: > On Tue, 14 May 2019 10:47:34 -0400 > "Jason J. Herne" <jjherne@xxxxxxxxxxxxx> wrote: > > Are we > > worried that virtio data structures are going to be a burden on the 31-bit address space? > > > > > > That is a good question I can not answer. Since it is currently at least > a page per queue (because we use dma direct, right Mimu?), I am concerned > about this. > > Connie, what is your opinion? Yes, running into problems there was one of my motivations for my question. I guess it depends on the number of devices and how many queues they use. The problem is that it affects not only protected virt guests, but all guests.