Systems and methods for interrupt distribution

In a data processing system having a plurality of domains and configured to execute a plurality of threads wherein the data processing system is configured to execute a plurality of software codes each having data portions that are isolated in a domain of the plurality of domains, a method comprising:

• programming a domain-thread storage circuit corresponding to each domain of the plurality of domains with an enable indicator corresponding to each thread of the plurality of threads, wherein the enable indicators of the domain-thread storage circuit of each corresponding domain indicate a set of threads of the plurality of threads to which interrupt vectors are permitted to be routed from the corresponding domain;
• in one domain of the plurality of domains, selecting a first interrupt request from a set of received interrupt requests;
• determining a first interrupt vector for the selected first interrupt request;
• and
• based on the enable indicators corresponding to the one domain, selecting a first thread to receive the selected interrupt request;
• and
• routing the first interrupt vector to the selected thread.

A data processing system configured to execute a plurality of threads, comprising:

• a plurality of domains, wherein the data processing system is configured to execute a plurality of software codes each having data portions that are isolated in a domain of the plurality of domains;
• a plurality of processor cores, each configured to execute a set of threads of the plurality of threads;
• a plurality of domain interrupt controller circuits wherein each domain interrupt controller circuit corresponds to a corresponding domain of the plurality of domains, each domain interrupt controller circuit comprising:
• an interrupt selection circuit configured to select an interrupt request from a set of interrupt requests received by the interrupt selection circuit and determine an interrupt vector for the selected interrupt request;
• and
• a programmable domain-thread storage circuit configured to store an enable indicator corresponding to each thread of the plurality of threads, wherein the enable indicator for each corresponding thread indicates whether or not the corresponding domain is permitted to route interrupt vectors to the corresponding thread;
• a routing circuit configured to route the interrupt vector to a selected thread of the plurality of threads which is selected based at least in part on the enable indicators, wherein the routing circuit includes a connection between the corresponding domain and each thread of the plurality of threads.