In the context lossy method and apparatus for the present meta-physical address space to keep the metadata description The. Faced with the explicit or implicit meta-data access behavior of the data item referenced by the data address. The hardware modification of the data addressed to the meta-meta-data address including a physical expansion. Meta physical expansion is at least one meta-physical address space (s) and overlay on the data address space. Some of the metadata including metadata physical address extension is used to retrieve the tag array of a cache memory for holding the data item. As a result, only the meta-data access operation collides with the metadata entry in the cache based on the metadata address extension. However, according to the meta data is maintained in the cache, the metadata will potentially compete with data for space in the cache ;
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