"Describe the process of memory address allocation in device drivers. What challenges might arise when multiple devices require access to system memory and how do device drivers manage these challenges effectively?"
Drivers allocate and manage memory addresses required by processes ensuring that devices do not conflict over memory space. Memory is allocated using kmalloc and vmalloc functions in kernel and user space.
Challenges of cross communication of data could occur among processes. This is addressed using threads and synchronization mechanisms such as mutex lock and unlock, spinlocks, atomic set etc.
