Performance improvement to vga arbitration

Tiago Vignatti tiago.vignatti at
Wed Jun 23 08:13:52 PDT 2010

On Tue, Jun 22, 2010 at 10:00:05PM +0200, ext Mark Kettenis wrote:
> Of course your diff is not in yet.  It will kill systems with cards
> that do need the legacy stuff.  And setting VGA_ARB_RSRC_NONE is
> totally wrong.  The cards will still need access to their framebuffer
> so minimally you want VGA_ARB_RSRC_NORMAL_MEM.
> The proper way to handle this is to add to add the appropriate
> xf86VGAarbiterDeviceDecodes() call to the drivers that are known not
> to require VGA legacy access, and only bypass the arbiter once there
> are no devices left in the system that require legacy access.

Okay, I don't have time to review it now. Sorry. And FYI:


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