Blanking memory for security?

[Catacombs]

That is for a QUBE to write over the memory it occupies, before it takes over the memory, or as it leaves the memory.

Or should I say writing over the memory, likely some RAM, some virtual on the drive with a pattern.

Does QUBEs do that?  Should I be concerned if it does or does not?

[brenda...@gmail.com]

Xen hypervisor overwrites memory before allocating it to a domU VM.