On Tue, Jan 26, 2016 at 07:49:56PM +0100, Daniel Vetter wrote: > The fake agp driver for the intel graphics gart is only needed for ums > support. And we ditched that a long time ago: > > commit 03dae59c72ffffd8ef6e005f48ba356c863e0587 > Author: Daniel Vetter <daniel.vetter@xxxxxxxx> > Date: Wed Jul 23 16:27:25 2014 +0200 > > drm/i915: Ditch UMS config option > > With this there's no longer the problem that 2 drivers (fake agp > driver and the drm/i915 driver) fight over the same piece, which fixes > apparent dma leaks detected by CONFIG_DMA_API_DEBUG. > > Note that the leak isn't real since intel-gtt refcounts and will tear > down eventually. But the debug code assumes that when the i915 driver > unbinds from the pci device everything should be gone. Which isn't the > case if we have intel-agp enabled - userspace might need it. But by > ditching this intel-gtt setup and teardown is completely tied to the > livetime of the "real" driver. > > While at it untangle the init ordering a bit - the fake agp wouldn't > be initialized correctly if i915.ko loads first. Which isn't a problem > since when i915 loads in kms mode you won't need the fake agp support > needed by the ums driver ... > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93793 > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
