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    • 11. 发明申请
    • RDMA enabled I/O adapter performing efficient memory management
    • RDMA使能的I / O适配器执行高效的内存管理
    • US20060236063A1
    • 2006-10-19
    • US11357446
    • 2006-02-17
    • Brian HausauerRobert Sharp
    • Brian HausauerRobert Sharp
    • G06F12/00
    • G06F12/1081
    • An RDMA enabled I/O adapter and device driver is disclosed. In response to a memory registration that includes a list of physical memory pages backing a virtually contiguous memory region, an entry in a table in the adapter memory is allocated. A variable size data structure to store the physical addresses of the pages is also allocated as follows: if the pages are physically contiguous, the physical page address of the beginning page is stored directly in the table entry and no other allocations are made; otherwise, one small page table is allocated if the addresses will fit in a small page table; otherwise, one large page table is allocated if the addresses will fit in a large page table; otherwise, a page directory is allocated and enough page tables to store the addresses are allocated. The size and number of the small and large page tables is programmable.
    • 公开了一种支持RDMA的I / O适配器和设备驱动程序。 响应于包括支持虚拟连续存储器区域的物理存储器页的列表的存储器注册,分配适配器存储器中的表中的条目。 用于存储页面的物理地址的可变大小的数据结构也被分配如下:如果页面是物理上连续的,则开始页面的物理页面地址直接存储在表格条目中,并且不进行其他分配; 否则,如果地址适合小页表,则分配一个小页表; 否则,如果地址将适合大页表,则分配一个大页表; 否则,分配页面目录,并分配足够的页面表来存储地址。 小页和大页表的大小和数量是可编程的。