How to check if nested KVM is enabled by doing a cat on nested inside sys
Nested KVM is mainly important for testing for example if you wanted to install VMWare or Proxmox Nodes in a virtual environment for testing. Without nesting, the performance will be extremely slow, since the VMs within the nodes will not be using Virtualization extensions.
I've used wildcard on kvm_ because it could be kvm_intel or kvm_amd depending on whether y........
When running cudaminer once it tries to initialize the card the entire screen freezes. The computer itself is still running but the Xorg is done for, you cannot even switch to another console window and must reboot (even an mdm or Xorg restart does not help).
At first cudaminer will give you these errors:
stratrum_recv_line failed
...retry after 15 seconds
GPU #0: Geforce 210 with compute ca........
Failed to open a session for the virtual machine XP.
AMD-V is being used by another hypervisor. (VERR_SVM_IN_USE).
VirtualBox can't enable the AMD-V extension. Please disable the KVM kernel extension, recompile your kernel and reboot (VERR_SVM_IN_USE)
Solution - Unload KVM module (you can't use two hardware virtualization suites at once)
sudo rmmod kvm_amd kvm........