On Mon, 2019-01-14 at 07:46 -0800, Sean Christopherson wrote: > On Sat, Jan 12, 2019 at 07:43:02AM +0100, Mike Galbraith wrote: > > On Wed, 2019-01-09 at 11:26 -0800, Sean Christopherson wrote: > > > > > > I'll try to bisect. > > > > Good luck with that. I gave it a go, but that apparently invalidated > > the warrantee of my vm image :) > > This is fixed in v5.0-rc2 by commit ba422731316d ("mm/mmu_notifier: > mm/rmap.c: Fix a mmu_notifier range bug in try_to_unmap_one"). Good to hear. > Nested VMs are great for bisecting KVM issues :) I tried nesting dolls (to speed bisection.. hah!), but couldn't reliable trigger the problem with my reproducer. Even if it had, nested VMs are pretty cool, but not the _least bit_ fast :) -Mike