International Business Machines Corporation

Brenton Yiu

Shakti Kapoor

Manoj Dusanapudi

John Martin Ludden

Bryan Glen Hickerson

Charles Meissner

Siva Sundar A

Elena Tsanko

Methods and systems for testing a functionality of a code modification operation are described. In an example, a processor can include a processor pipeline comprising one or more execution units. The processor pipeline can execute a first thread. The processor pipeline can further execute a second thread concurrently with the execution of the first thread. The second thread can be executed to modify the first thread using a code modification operation. The processor can further include a test module configured to validate a functionality of the code modification operation based on a result of the modified first thread.

Functional test of processor code modification operations

In an approach to validation of correctness of interrupt triggers and delivery a computer allocates one or more flags of a gang of flags. The computer allocates one or more interrupt source numbers, wherein each interrupt source number of the one or more interrupt source numbers corresponds to a flag of the gang of flags. The computer allocates one or more virtual processors to process the one or more interrupt source numbers. The computer schedules the one or more virtual processors. The computer receives one or more interrupt triggers corresponding to the one or more interrupt source numbers. The computer updates the one or more flags corresponding to the one or more received interrupt triggers. The computer determines whether all of the one or more flags in the gang of flags is updated. The computer determines a lost interrupt source number.

Validation of correctness of interrupt triggers and delivery

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Brenton Yiu