l4linux GPU direct access

Adam Lackorzynski adam at os.inf.tu-dresden.de
Thu Jun 7 23:45:06 CEST 2012


On Wed Jun 06, 2012 at 15:28:53 +0200, Abhishek Gupta wrote:
> I was trying to run xserver on l4linux using vesa frame buffer (l4 is
> running on kvm) and virtual machine
> hangs and it seems that a infinite loop is started which
> is continuously try to do something
> but doesn't succeed.
> Also I read in previous years mailing list that Linux tries to execute
> int10 to set the VESA mode but L4 applications are not
> allowed to execute real-mode code. Does this have anything to do with my
> problem?? How can I fix this problem?

A setup for this can be done by using Grub to enable a VESA mode or
fb-drv, which does the same at runtime. Then give fb-drv's fb cap to
L4Linux and use the fbdev X driver.

Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/

More information about the l4-hackers mailing list