Re: [Ksummit-discuss] [CORE TOPIC] Redesign Memory Management layer and more core subsystem

[Greg KH <greg@kroah.com>]

On Wed, Jun 11, 2014 at 02:03:05PM -0500, Christoph Lameter wrote:
> 6. Direct hardware access
> 
> Often the kernel subsystems are impeding performance. In high speed
> computing we regularly bypass the kernel network subsystems, block I/O
> etc. Direct hardware access means though that one is explosed to the ugly
> particularities of how a certain device has to be handled. Can we have the
> cake and eat it too by defining APIs that allow low level hardware access
> but also provide hardware abstraction (maybe limited to certain types of
> devices).

What type of devices are you wanting here, block and networking or
something else?  We have the uio interface if you want to (and know how
to) talk to your hardware directly from userspace, what else do you want
to do here that this doesn't provide?

thanks,

greg k-h