Complex sentence: It may be possible to share "memory pages" that have identical contents among multiple virtual machines that run on the same physical machine, what may result in mapping them to the same physical page by a technique known as Kernel SamePage Merging.
Split into simpler sentences: It may be possible to share "memory pages" that have identical contents among multiple VMs that run on the same actual machine. This may result in mapping them to the same physical page, by a technique known as Kernel SamePage Merging.