A system, method, and a computer readable for protecting content of a
memory page are disclosed. The method includes determining a start of a
semi-synchronous memory copy operation. A range of addresses is
determined where the semi-synchronous memory copy operation is being
performed. An issued instruction that removes a page table entry is
detected. The method further includes determining whether the issued
instruction is destined to remove a page table entry associated with at
least one address in the range of addresses. In response to the issued
instruction being destined to remove the page table entry, the execution
of the issued instruction is stalled until the semi-synchronous memory
copy operation is completed.