We also add the'unsafe'keyword since direct memory access isn't thread safe. 我们也添加了“不安全”的关键词因为直接内存获取并不安全。
The first copy is performed by the DMA engine, which reads file contents from the disk and stores them into a kernel address space buffer. 直接内存存取(directmemoryaccess,DMA)引擎执行了第一次拷贝(参见图1),它从磁盘中读取文件内容,然后将它们存储到一个内核地址空间缓存区中。
The SPEs access main storage with direct memory access ( DMA ) commands that move data and instructions between main storage and a private local memory, called a local store or local storage ( LS ). SPE用直接内存访问(DMA)命令访问主存储器,可以在主存储器与称为本地库或本地存储(LS)的私有本地内存之间移动数据和指令。
A method and apparatus for high performance volatile disk drive ( VDD ) memory access using an integrated direct memory access ( DMA ) engine. 一种方法和装置,用于使用集成直接存储器访问(DMA)引擎进行高性能易失性磁盘驱动器(VDD)存储器访问。
The most efficient scheme uses hardware assists such as the AMD I / O MMU ( IOMMU ) to provide transparent translation of guest physical addresses to host physical addresses ( for operations such as direct memory access [ DMA ] ). 最有效的方案是使用像AMDI/OMMU(IOMMU)这样的硬件协助来提供Guest物理地址到主机物理地址的透明转换(用于直接内存访问[DMA]这样的操作)。