1.4 Memory

This section summarizes kernel-mode support routines that NT drivers can call, according to the following general categories:

• Support routines that drivers can call to allocate and free temporary buffers and/or zone buffers in Section 1.4.1 

• Support routines that drivers can call to allocate long-term internal driver buffers in Section 1.4.2 

• Support routines that drivers can call to manage buffered data or to initialize driver-allocated buffers in Section 1.4.3 

• Support routines that drivers can call to get mapped addresses and to allocate or manage MDLs (memory descriptor lists) in Section 1.4.4 

• Macros that drivers can use with buffers and MDLs in Section 1.4.5 

• Macros that device drivers can use to communicate with their respective devices in Section 1.4.6 

• Support routines that some drivers can call to lock and unlock their pageable code or data sections or can call to make their entire driver pageable in Section 1.4.7 

• Support routines that drivers can call to set up mapped sections and views of memory in Section 1.4.8