Comment 22 for bug 1829555

Note: support on nested is and always was "best effort" as it is famously known to work great until it doesn't. Recently upstreams stance on this changed and in the last few versions nested x86 got some love (due to some big players using it now), but I'm more looking to 20.04 than anything before it to call it good. So we might after this analysis call it "known but won't fix" (depending on complexity). IIRC the rule was always "feel free to use and it will be great, but not for production as there might be dragons"