can vb use host's virtual memory?

[adamhj]

is there anyway to make virtualbox using host's virtual memory, or virualbox can manage an individual virtual memory itself? there are situations i need to give guest more memory than host, and even if one don't need more memory than host, this can still reduce 'HostMemoryLow' error when host's load is high

[vbox4me2]

No it can't use that.