Unified address translation

A method, comprising:

• receiving a memory access operation comprising a first address targeting a memory;
• and
• in response to receiving the memory access operation:
• identifying, by an address translation unit, a data access permission based on a permission index corresponding to the first address;
• and
• accessing, by the address translation unit, data stored in a memory location of the memory identified by a second address in a manner defined by the retrieved data access permissions;
• wherein the permission index and an address mapping between the first address and the second address are shared by the apparatus and an external processing unit, wherein the external processing unit uses a different data access permission than the identified data access permission.

A non-transitory computer readable storage medium storing program instructions, wherein the program instructions are executable by a processor to:

• receive a memory access operation comprising a first address targeting a memory;
• and
• in response to receiving the memory access operation:
• identify a data access permission based on a permission index corresponding to the first address;
• and
• access data stored in a memory location of the memory identified by a second address in a manner defined by the retrieved data access permission;
• wherein the permission index and an address mapping between the first address and the second address are shared by the apparatus and an external processing unit, wherein the external processing unit uses a different data access permission than the identified data access permission.