RE: Exporting kernel memory to application

[Nitin Dhingra]

You can do that by using kiobuf's ( only in kernel 2.4.x ).
That way you could lock the user buffers in kernel but you 
would have to allocate user buffer prior to using any kiobuf's functions 
like map_user_kiobuf() 

For example you could look at arch/cris/drivers/examples/kiobuftest.c

:),
Nitin

 -----Original Message-----
From: 	Alan Cox [mailto:[e-mail]] 
Sent:	Tuesday, August 07, 2001 4:31 PM
To:	[e-mail]
Cc:	[e-mail]
Subject:	Re: Exporting kernel memory to application

> I am in a situation where it is required to export a kernel memory
> (allocated by kmalloc in the device driver) to the user application. I
would
> really appreciate any guidance or suggestion.

Look at the sound drivers, they do this, although with memory allocated
by get_free_pages() - the rest of the theory is the same