Abstract: A data processing apparatus includes processing circuitry, a cache storage, and a replicated address storage having a plurality of entries. On detecting a cache record error, a record of a cache location avoid storage is allocated to store a cache record identifier for the accessed cache record. On detection of an entry error, use of the address indication currently stored in that accessed entry of the replicated address storage is prevented, and a command is issued to the cache location avoid storage. In response, a record of the cache location avoid storage is allocated to store the cache record identifier for the cache record of the cache storage associated with the accessed entry of the replicated address storage. Any cache record whose cache record identifier is stored in the cache location avoid storage is logically excluded from the plurality of cache records.

Abstract: A data processing apparatus and method are provided for handling hard errors. The data processing apparatus comprises processing circuitry for performing data processing operations, and cache storage having a plurality of cache records for storing data values for access by the processing circuitry when performing the data processing operations. A cache record error storage having at least one error record, and a hard error storage having at least one hard error record, are provided for keeping track of errors detected when accessing cache records of the cache storage. In particular, when an error is first detected for a particular cache record, one of the error records in the cache record error storage is allocated to store a cache record identifier for that cache record, and an associated count value is set to a first value.

Abstract: A data processing apparatus and method are provided for handling errors. The data processing apparatus comprises processing circuitry for performing data processing operations, a cache storage having a plurality of cache records for storing data values for access by the processing circuitry when performing the data processing operations, and a replicated address storage having a plurality of entries, each entry having a predetermined associated cache record within the cache storage and being arranged to replicate the address indication stored in the associated cache record. On detecting a cache record error when accessing a cache record of the cache storage, a record of a cache location avoid storage is allocated to store a cache record identifier for the accessed cache record.