Re: Probs with PCI bus master DMA to user space

[Norbert Roos <n.roos@berlin.de>]

Jeff Garzik wrote:
> 
> On Tue, 20 Feb 2001, Norbert Roos wrote:
> 
> > Jeff Garzik wrote:
> >
> > > > But the buffers are usually allocated with malloc() by any application
> > > > which wants to use my driver.. otherwise my driver would have to offer a

> 
> fd = open(...);
> buf = mmap(fd, ...);
> fill_buffer_with_data(buf);
> ioctl(fd, ...); /* tell kernel data is there */
> 

Hm hm - this is exactly what i wanted to avoid: The application should
not
be modified only to be able to use my driver - and if it is using
malloc(), it would have to be modified..

Thanks anyway!

Norbert