Need to find out how kernel can direct read write user space memory.
sg_io()
blk_rq_map_user_iov() in block/blk-map.c worth a check.
bio_map_user_iov()
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Explain There is not interrupt PIN for PCIe interrupt. When device wants to raise an interrupt, an interrupt message is sent to host via ... -
Configure Space Addressing One of the major improvements the PCI Local Bus had over other I/O architectures was its configuration mechanism... -
What is LMA and VMA Every loadable or allocatable output section has two addresses. The first is the VMA, or virtual memory address. This ...
