Re: CCA4 mapping

[Dan Malek <dan@embeddedalley.com>]

On May 26, 2005, at 9:20 AM, Hauke Goos-Habermann wrote:

> Does anybody have an idea how to make the CCA4 mapping?
In the mmap() entry for the driver:

        pgprot_val(vma->vm_page_prot) |= (4 << 9);     /* CCA4 */

or, whatever is appropriate.  This will only work from a user
application (like X-Windows) that mmaps() the driver, you
aren't going to get a kernel mapped space this way without
some special VM space hacking.

Thanks.

        -- Dan