System architecture with query based address translation for access validation

A method for access validation in a data processing system comprising:

• receiving, at a peripheral component of the data processing system, a transaction request from a first device of a data processing system, the request targeted to a first address, the first device coupled to the data processing system via the peripheral component and the peripheral component including a peripheral port or a peripheral switch;
• responsive to receiving the transaction request, the peripheral component generating an address query for the first address;
• sending, by the peripheral component, the address query to a system memory management unit;
• receiving, by the peripheral component from the system memory management unit, a response including a second address, translated from the first address, and attributes associated with a second device, where the second device is associated with the second address;
• and
• confirming or denying, by the peripheral component, access validation for the transaction request dependent upon the second address and the attributes of the response, and
• forwarding, by the peripheral component, the transaction request to the second device when access validation is confirmed.