| 摘要 |
Embodiments of a data cache are disclosed that substantially decrease a number of accesses to a physically-tagged tag array of the data cache are provided. In general, the data cache includes a data array that stores data elements, a physically-tagged tag array, and a virtually-tagged tag array. In one embodiment, the virtually-tagged tag array receives a virtual address. If there is a match for the virtual address in the virtually-tagged tag array, the virtually-tagged tag array outputs, to the data array, a way stored in the virtually-tagged tag array for the virtual address. In addition, in one embodiment, the virtually-tagged tag array disables the physically-tagged tag array. Using the way output by the virtually-tagged tag array, a desired data element in the data array is addressed. |
