Dave Airlie ebff5fa9d5 Revert "i915: Update VGA arbiter support for newer devices" ... This reverts commit 81b5c7bc8d. Adding drm/i915 into the vga arbiter chain means that X (in a piece of well-meant paranoia) will do a get/put on the vga decoding around _every_ accel call down into the ddx. Which results in some nice performance disasters [1]. This really breaks userspace, by disabling DRI for everyone, and stops OpenGL from working, this isn't limited to just the i915 but both the integrated and discrete GPUs on multi-gpu systems, in other words this causes untold worlds of pain, Ville tried to come up with a Great Hack to fiddle the required VGA I/O ops behind everyone's back using stop_machine, but that didn't really work out [2]. Given that we're fairly late in the -rc stage for such games let's just revert this all. One thing we might want to keep is to delay the disabling of the vga decoding until the fbdev emulation and the fbcon screen is set up. If we kill vga mem decoding beforehand fbcon can end up with a white square in the top-left corner it tried to save from the vga memory for a seamless transition. And we have bug reports on older platforms which seem to match these symptoms. But again that's something to play around with in -next. References: [1] http://lists.x.org/archives/xorg-devel/2013-September/037763.html References: [2] http://www.spinics.net/lists/intel-gfx/msg34062.html Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>		2013-10-11 15:19:22 +10:00
..
acpi	Merge branch 'acpi-hotplug'	2013-08-30 14:14:25 +02:00
asm-generic	mm: Fix generic hugetlb pte check return type.	2013-10-02 20:02:35 -04:00
clocksource	ARM: SoC cleanups for 3.12	2013-09-06 13:21:16 -07:00
crypto
drm	Revert "drm: mark context support as a legacy subsystem"	2013-09-20 08:32:59 +10:00
dt-bindings	Device tree core updates for v3.12	2013-09-10 13:53:52 -07:00
keys
kvm	ARM: KVM: vgic: Bump VGIC_NR_IRQS to 256	2013-08-30 16:12:39 +03:00
linux	Revert "i915: Update VGA arbiter support for newer devices"	2013-10-11 15:19:22 +10:00
math-emu
media	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2013-09-05 14:54:29 -07:00
memory
misc
net	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf	2013-10-01 12:39:35 -04:00
pcmcia
ras
rdma	Merge branches 'cxgb4', 'flowsteer', 'ipoib', 'iser', 'mlx4', 'ocrdma' and 'qib' into for-next	2013-09-03 09:01:08 -07:00
rxrpc
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-09-12 16:11:45 -07:00
sound	sound fixes for 3.12-rc1	2013-09-12 08:52:41 -07:00
target	target/iscsi: Bump versions to v4.1.0	2013-09-10 20:23:37 -07:00
trace	Merge branch 'for-3.12/core' of git://git.kernel.dk/linux-block	2013-09-22 15:00:11 -07:00
uapi	Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux	2013-09-29 10:02:40 -07:00
video	fbdev changes for 3.12:	2013-09-05 09:49:32 -07:00
xen	Features:	2013-09-04 17:45:39 -07:00
Kbuild