7ea1a24220
A memory region is allowed to be registered multiple times when the memory
is specified by a user pointer. If it's registered with the same user
pointer but with different sizes, it's treated as different instances and
multiple VM objects are created with different GPU address.
Change-Id: I49627111bb5db36d18f1133b252fb62a611f06a4
[ROCm/ROCR-Runtime commit: 2a50ebba98]