On 21/09/17 03:15, Paolo Bonzini wrote: > On 20/09/2017 13:46, Alexey Kardashevskiy wrote: >> Address spaces get to keep a root MR (alias or not) but FlatView stores >> the actual MR as this is going to be used later on to decide whether to >> share a particular FlatView or not. >> >> Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> >> --- >> Changes: >> v4: >> * s/memory_region_unalias_entire/memory_region_get_flatview_root/ > > Did you try the idea of checking for single-child regions too?
No, I did not, I do not see how I can actually measure the difference - the PCI and virtio root MRs or single child MRs are unique anyway, I can save some time by just checking for 2 @enabled flags instead of rendering a FlatView but rendering such cases itself is fast as well. I'll give a try though. -- Alexey
