Re: Running out of vmalloc space

Christoph Hellwig
2001-05-18T16:44:59Z

On Thu, May 17, 2001 at 04:48:38PM -0600, David Pinedo wrote:
> Unfortunately, yes. It has to be in the kernel's virtual address space,
> because the kernel graphics driver initiates DMAs to and from the
> graphics board, which can only be done from the kernel using locked down
> physical memory.

Take a look at drivers/char/raw.c on how to lock down userpages.

Christoph

--
Of course it doesn't work. We've performed a software upgrade.