BOOLEAN MmIsAddressValid( IN PVOID VirtualAddress ); Routine Description: For a given virtual address this function returns TRUE if no page fault will occur for a read operation on the address, FALSE otherwise. Note that after this routine was called, if appropriate locks are not held, a non-faulting address could fault. Arguments: VirtualAddress - Supplies the virtual address to check. Return Value: TRUE if a no page fault would be generated reading the virtual address, FALSE otherwise. Environment: Kernel mode.