Hyper-V team just identified a bug where the Hyper-V hypervisor can truncate the host SYSENTER_ESP/EIP to 16 bits on VMexit for some reason. A further investigation is ongoing.
Hyper-V team just identified a bug where the Hyper-V hypervisor can truncate the host SYSENTER_ESP/EIP to 16 bits on VMexit for some reason. A further investigation is ongoing.