How good is nested virt on the providers here?
For some time it seemed that providers had a problem enabling nested virtualization on KVM systems, with php-friends one of the first I saw offering it. Has there been a change in the underlying technology that has lowered the barriers to providers enabling it?
I see a few providers like php-friends, greencloudvps, a recent hosthatch offering enable nested virtualization for KVM.
Have any of you guys tried running nested KVM on those to see how good it is?