Questions

1. sysfs_on_misc: sysfs assignment #1: Extend one of the misc device drivers we wrote in Chapter 1, Writing a Simple misc Character Device Driver; set up two sysfs files and their read/write callbacks; test them from user space.

2. sysfs_addrxlate: sysfs assignment #2 (a bit more advanced): Address translation: Exploiting the knowledge gained from this chapter and from the Linux Kernel Programming book, Chapter 7, Memory Management Internals - Essentials, the Direct-mapped RAM and address translation section, write a simple platform driver that provides two sysfs interface files called addrxlate_kva2pa and addrxlate_pa2kva. Writing a kva into the sysfs file, addrxlate_kva2pa, should have the driver read and translate the kva into its corresponding physical address (pa); then, reading from the same file should cause the pa to be displayed. Do the same with the addrxlate_pa2kva sysfs file.
3. dbgfs_disp_pgoff: debugfs assignment #1: Write...