lkml.org 
[lkml]   [1999]   [Sep]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: MTRR setting and framebuffer driver
Jamie Lokier wrote:
> I would like either vesafb, or the MTRR driver to realise that this
> 2.5MB region is a sub-region of the 4MB region that won't be used by
> anything else, so it is safe to allocate a 4MB write-combining MTRR.
>
> Richard, is this possible now that we have the resource tree to examine?
> Perhaps it is possible to generically permit rounding an MTRR range,
> provided the extra address space is not used in the resource tree, and
> if this condition changes in the tree, to remove the MTRR.

IMHO this should be done in vesafb, possibly based on the value passed
to __request_region().

Jeff



--
Custom driver development | Never worry about theory as long
Open source programming | as the machinery does what it's
| supposed to do. -- R. A. Heinlein
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:53    [W:0.050 / U:0.548 seconds]
©2003-2014 Jasper Spaans. Advertise on this site