On Thu, 2025-08-28 at 14:48 +0800, Yan Zhao wrote: > Hmm, I still think it's safer to keep the nr_premapped to detect any unexpected > code change. When I checking patch 6 I saw how many more KVM_BUG_ON()s we ended up with in TDX code compared to the rest of KVM. (even after we dropped a bunch during development) We have to differentiate from good safety, and "safety" that is really just propping up brittle code. Each KVM_BUG_ON() is a hint that there might be design issues.