VERR_CPUM_RAISE_GP_0 error with Virtualbox 6.1.18 and HypervisorPlatform/WSL2 enabled on some CPUs

[mictaege]

In order to use WSL2 I enabled HypervisorPlatform and VirtualMachinePlatform with the following commands:

Dism /online /Enable-Feature /FeatureName:HypervisorPlatform /All
Dism /online /Enable-Feature /FeatureName:VirtualMachinePlatform /All

After a reboot I wasn't able to boot existing Virtual Machines or to create new ones anymore. After GRUB was loading fine, the machine gets stuck with a black screen and a blinking cursor. At this time the last entry in the VBox.log file of the machine was:

MsrExit/0: 0010:ffffffffb9c6dc97/LM: RDMSR 00000140 -> 00000000 / VERR_CPUM_RAISE_GP_0

This happend in the same way with a variety of different Linux guests both with newer and older kernels: Oracle Linux 7, Ubuntu 20.04 LTS, Ubuntu 20.10, Ubuntu 18.10

Trying VB 6.1.19 r142995 doesn't help. Although there was no longer a VERR_CPUM_RAISE_GP_0 error, but the VMs run with extremely poor performance (e.g. boot time up to 5m)

After many tries I found that that these problems only occur on my notebook with a i9-10885H CPU @ 2.40GHz CPU but not on another notebook with a i7-1065G7 CPU @ 1.30GHz CPU. On the notebook with the i7 CPU VB 6.1.18 worked very well together with HypervisorPlatform, VirtualMachinePlatform and WSL2 enabled. Even the performance of the VM was very good.

[mictaege]

sorry for adding the log file accidentally twice

[mictaege]

Seems to be fixed with VirtualBox 6.1.20.