RTEMS MAP_SHARED support expansion

Sebastian Huber sebastian.huber at embedded-brains.de
Wed May 17 05:32:00 UTC 2017

On 16/05/17 21:28, Kirspel, Kevin wrote:
> The second approach includes the first approach but adds support for 
> RTEMS device drivers.  We would need to add a mmap handler to 
> “rtems_driver_address_table”.  The “IMFS_device_handlers” would add a 
> mmap handler to device_mmap(). We would need a new 
> rtems_deviceio_mmap() function to call the drivers mmap handler.  I 
> don’t think any BSPs will be affected because the mmap handler of 
> “rtems_driver_address_table” should initialize to NULL.  Any BSP would 
> them be free to add a handler to process mmap calls.

I would not touch the legacy RTEMS device drivers. With the IMFS generic 
nodes we have something more flexible with lower overhead.

Sebastian Huber, embedded brains GmbH

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