Question: Some computers allow I/O directly to user space. For example, a program could start up a disk transfer to a buffer inside a user process.

Some computers allow I/O directly to user space. For example, a program could start up a disk transfer to a buffer inside a user process. a. Does this cause any problems if compaction is used to implement the virtual memory? Why and how to fix it? b. Does this cause any problem if paging-based virtual memory is used? Why and how to fix it?

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