Hardware apparatuses and methods to perform transactional power management

A method comprising:

• providing a plurality of power domains of a hardware apparatus including a hardware processor to transition to one of a plurality of power states in response to a power management command for each power domain;
• assigning a first power management command as a first power transaction and a second power management command as a second power transaction for concurrent execution;
• performing a commit of the first power transaction and the second power transaction when there is no conflict between the first power transaction and the second power transaction;
• and
• performing an abort of the first power transaction and a commit of the second power transaction when there is a conflict between the first power transaction and the second power transaction.

A non-transitory machine readable storage medium having stored program code that when processed by a machine causes a method to be performed, the method comprising:

• providing a plurality of power domains of a hardware apparatus including a hardware processor to transition to one of a plurality of power states in response to a power management command for each power domain;
• assigning a first power management command as a first power transaction and a second power management command as a second power transaction for concurrent execution;
• performing a commit of the first power transaction and the second power transaction when there is no conflict between the first power transaction and the second power transaction;
• and
• performing an abort of the first power transaction and a commit of the second power transaction when there is a conflict between the first power transaction and the second power transaction.