Memory dynamic reconfiguration (DR) is capacity-based and enables you to add an arbitrary amount of memory to or remove it from an active logical domain.
The requirements and restrictions for using the memory DR feature are as follows:
You can perform memory DR operations on any domain. However, only a single memory DR operation can be in progress on a domain at a given time.
The memory DR feature enforces 256-Mbyte alignment on the address and size of the memory involved in a given operation. See Memory Alignment.
Unaligned memory in the free memory pool cannot be assigned to a domain by using the memory DR feature. See Adding Unaligned Memory.
If the memory of a domain cannot be reconfigured by using a memory DR operation, the domain must be stopped before the memory can be reconfigured. If the domain is the control domain, you must first initiate a delayed reconfiguration.
Under certain circumstances, the Logical Domains Manager rounds up the requested memory allocation to either the next largest 8-Kbyte or 4-Mbyte multiple. The following example shows sample output of the ldm list-domain -l command, where the constraint value is smaller than the actual allocated size:
Memory: Constraints: 1965 M raddr paddr5 size 0x1000000 0x291000000 1968M