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    • 2. 发明授权
    • Cache-memory control apparatus, cache-memory control method and computer product
    • 缓存存储器控制装置,缓存存储器控制方法和计算机产品
    • US07743215B2
    • 2010-06-22
    • US11980386
    • 2007-10-31
    • Tomoyuki OkawaHiroyuki KojimaHideki SakataMasaki Ukai
    • Tomoyuki OkawaHiroyuki KojimaHideki SakataMasaki Ukai
    • G06F12/00
    • G06F12/0897G06F12/0811
    • A cache-memory control apparatus controls a level-1 (L1) cache and a level-2 (L2) cache having a cache line divided into a plurality of sub-lines for storing data from the L1 cache. The cache-memory control apparatus includes a control-flag adding unit, an L1 cache control unit, and an L2 cache control unit. The control-flag adding unit provides an SP flag to each of the sub-lines. The L1-cache control unit acquires an access virtual address, and, when there is no data at the access virtual address, outputs an L2 cache-access address to the L2-cache control unit. The L2-cache control unit switches the SP flag based on a virtual page number in an L1 index and a physical page number in an L2 index. Based on the SP flag, corresponding one of the sub-lines is written back to the L1 cache.
    • 高速缓冲存储器控制装置控制一级(L1)高速缓存和二级(L2)高速缓存,该缓存具有被划分成用于存储来自L1高速缓存的数据的多条子行的高速缓存行。 高速缓冲存储器控制装置包括控制标志添加单元,L1高速缓存控制单元和L2高速缓存控制单元。 控制标志添加单元向每个子线提供SP标志。 L1高速缓存控制单元获取访问虚拟地址,并且当在访问虚拟地址处没有数据时,向L2高速缓存控制单元输出L2高速缓存访​​问地址。 L2缓存控制单元基于L1索引中的虚拟页号和L2索引中的物理页号来切换SP标志。 基于SP标志,相应的一条子行被写回到L1高速缓存。
    • 8. 发明申请
    • Processor device and instruction processing method
    • 处理器设备和指令处理方法
    • US20080301324A1
    • 2008-12-04
    • US12222059
    • 2008-07-31
    • Masaki Ukai
    • Masaki Ukai
    • G06F13/14G06F12/02
    • G06F12/0857G06F12/0859
    • A cache receives a request from an instruction execution unit, searches for necessary data, outputs the data to the instruction execution unit if there is a cache hit, and instructs a request storage unit to request a move-in of the data if a cache miss occurs. The request storage unit stores therein the request corresponding to the instruction of the cache while the requested process is being executed. A REQID assignment unit reads the request stored in the request storage unit, selects an unused REQID from a REQID table, and assigns the unused REQID to the read request. The REQID is an identification number of the request based on the number of requests set as the maximum number that can be received at a simultaneous time by a system controller of the response side.
    • 高速缓存从指令执行单元接收请求,搜索必要的数据,如果存在高速缓存命中,则将数据输出到指令执行单元,如果高速缓存未命中,则指示请求存储单元请求数据的移入 发生。 请求存储单元在执行所请求的进程时存储与缓存的指令相对应的请求。 REQID分配单元读取存储在请求存储单元中的请求,从REQID表中选择未使用的REQID,并将未使用的REQID分配给读请求。 REQID是基于响应侧的系统控制器同时被接收的最大数量的请求数量的请求的标识号。