分配、协调各I/O 周边装置存取处理器需求的能力,发出中断(Interrupt)时,知道该由哪个处理器负责:标准化的中断处理机制。 快取存储器数据一致性协定(Cache Coherence Protocol):回写式(Write-Back)快取存储器常见的MESI(Modified, Exclusive, Shared, Invalid)协议。 低成本多处理器系统的根基:可让多处理器共享的系...
硬件（内存控制器）会主动帮软件解决DMA可能遇到的问题，但ARM上则需要手动flush DMA。
cache line：cache按行来组织，它是访问cache的最小单位，通常为16、32、64或128字节，cache line的大...
235 [ 0.886438] scsi host1: ata_piix 236 [ 0.886980] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc040 irq 14 237 [ 0.887640] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc048 irq 15 238 [ 0.891250] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI 23...
DMA Direct Memory Access, a method to move data between physically separate memories; this is typically performed by a DMA engine, separate from the host CPU, that can access the host physical memory as well as an IO device or GPU physical memory. GPU a Graphics Processing Unit; one type...
DMA Direct Memory Access, a method to move data between physically separate memories; this is typically performed by a DMA engine, separate from the host CPU, that can access the host physical memory as well as an IO device or GPU physical memory. GPU a Graphics Processing Unit; one type...
DMA Direct Memory Access, a method to move data between physically separate memories; this is typically performed by a DMA engine, separate from the host CPU, that can access the host physical memory as well as an IO device or GPU physical memory. GPU a Graphics Processing Unit; one type...