Not able to enable Nested VT-x/AMD-V

Discussions about using Linux guests in VirtualBox.
Post Reply
Fujitsu_user
Posts: 38
Joined: 12. Feb 2021, 00:02

Not able to enable Nested VT-x/AMD-V

Post by Fujitsu_user »

In the setting of VM, under the System/Processor, I found it doesn't allow us to enable the Nested VT-x/AMD-V which is needed for running qemu inside the VM to get KVM support.
Please help to fix this issue.
I'm using 6.1.36 VBox on a AMD 5800x Windows 11 machine.
Fujitsu_user
Posts: 38
Joined: 12. Feb 2021, 00:02

Re: Not able to enable Nested VT-x/AMD-V

Post by Fujitsu_user »

Found the command to enable it. Thanks.
Fujitsu_user
Posts: 38
Joined: 12. Feb 2021, 00:02

Re: Not able to enable Nested VT-x/AMD-V

Post by Fujitsu_user »

But even though the VM has the Nested VT-x/AMD-V flag enabled, but in the Linux VM, we still can't see the svm flag from /proc/cpuinfo, why?
fth0
Volunteer
Posts: 5677
Joined: 14. Feb 2019, 03:06
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Linux, Windows 10, ...
Location: Germany

Re: Not able to enable Nested VT-x/AMD-V

Post by fth0 »

Please provide a (zipped) VBox.log file.
Post Reply