Enabling hardware virtualisation BIOS; anything to beware?
This, which seem to be common practice for all hardware vendors, has been bugging me for a while: why is hardware virtualization always by default disabled in a server's BIOS?
Can it lower the system's stability?
Can it create security risks?
Can it have compatibility problems with... anything?
It's always a pain to find it disabled and have your hypervisor refuse to work... especially if you don't have access to the server's BIOS and need to call other people to fix that.
Hardware-assisted virtualization is supported by all server CPUs today, and is by no means a "new" or "experimental" feature anymore. Is there any technical reason at all for this?