Linux 4.4 PCIe DMA进入用户空间页面不起作用 - highmem不能用于DMA? [英]Linux 4.4 PCIe DMA into userspace pages not working - highmem not usable for DMA?
Linux:如何确定与ioremap返回的内容相对应的DMA地址 [英]Linux: how to determine the DMA address corresponding to what's returned from ioremap
如何在Linux内核模块中分配由1GB HugePages支持的DMA缓冲区? [英]How do I allocate a DMA buffer backed by 1GB HugePages in a linux kernel module?