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公开(公告)号:US09519502B2
公开(公告)日:2016-12-13
申请号:US14548624
申请日:2014-11-20
Applicant: GLOBALFOUNDRIES Inc.
Inventor: Guy L. Guthrie , Naresh Nayar , Geraint North , William J. Starke , Albert J. Van Norstrand, Jr.
CPC classification number: G06F9/45558 , G06F11/14 , G06F11/141 , G06F11/1438 , G06F11/1458 , G06F11/1484 , G06F11/203 , G06F11/2035 , G06F11/2046 , G06F11/2097 , G06F12/08 , G06F12/0804 , G06F12/0806 , G06F12/0833 , G06F12/0855 , G06F12/128 , G06F2009/45583 , G06F2201/86 , G06F2212/151 , G06F2212/62 , G06F2212/621
Abstract: A computer system comprises a processor unit arranged to run a hypervisor running one or more virtual machines, a cache connected to the processor unit and comprising a plurality of cache rows, each cache row comprising a memory address, a cache line and an image modification flag and a memory connected to the cache and arranged to store an image of at least one virtual machine. The processor unit is arranged to define a log in the memory and the cache further comprises a cache controller arranged to set the image modification flag for a cache line modified by a virtual machine being backed up, periodically check the image modification flags and write only the memory address of the flagged cache rows in the defined log. The processor unit is further arranged to monitor the free space available in the defined log and to trigger an interrupt if the free space available falls below a specific amount.
Abstract translation: 计算机系统包括处理器单元,其被配置为运行运行一个或多个虚拟机的管理程序,连接到处理器单元并包括多个高速缓存行的高速缓存,每个高速缓存行包括存储器地址,高速缓存行和图像修改标志 以及连接到高速缓存并被布置成存储至少一个虚拟机的图像的存储器。 处理器单元被布置为在存储器中定义日志,并且高速缓存还包括高速缓存控制器,其被布置为设置由被备份的虚拟机修改的高速缓存行的映像修改标志,周期性地检查映像修改标志,并且仅写入 定义的日志中标记的缓存行的内存地址。 处理器单元还被布置成监视定义的日志中可用的可用空间,并且如果可用空间低于特定量,则触发中断。