A simple summary of the role of MMU in Linux (not finished)

The role of the MMU in Linux:

1. Conversion of virtual reality

2. Control memory Access allowed

--The physical address is not continuous, it is converted into a continuous virtual address, and the programming is more convenient.

--can map memory to 0 address to debug Interrupt service Program

--some of the system's address segments are not allowed to be accessed, otherwise it will have unpredictable consequences, in order to avoid such errors, you can use the MMU match table settings to set these address segments to the user is not accessible type. The matching tables generated in the launcher contain address mappings, store page sizes (1m,64k, or 4K), and allow access to information.

A simple summary of the role of MMU in Linux (not finished)