🆕 vSphere 8.0 Update 1c is now available! Includes support for TKr 1.25.7 🥳
— William Lam (@lamw.bsky.social | @*protected email*) (@lamw) July 28, 2023
vSphere 8.0 Update 1c was just released and one of the resolved issues mentioned in the ESXi release notes is the following:
Nested virtual machines on AMD CPUs with operational systems such as Windows with virtualization-based security (VBS) might experience performance degradation, timeouts, or unresponsiveness due to an issue with the virtualization of AMD's Rapid Virtualization Indexing (RVI), also known as Nested Page Tables (NPT).
There are two scenarios in which this fix resolves:
- Running Windows Server VM with a Hyper-V enabled Generation 2 VM (Nested Virtualization) on AMD CPU
- Running Windows Server VM with VBS Enabled (Non-Nested VM) on AMD CPU