Imre Deak 59d02a1f45 drm/i915: fix HW lockup due to missing RPS IRQ workaround on GEN6 ... In commit dbea3cea69 Author: Imre Deak <imre.deak@intel.com> Date: Mon Dec 15 18:59:28 2014 +0200 drm/i915: sanitize RPS resetting during GPU reset we disable RPS interrupts during GPU resetting, but don't apply the necessary GEN6 HW workaround. This leads to a HW lockup during a subsequent "looping batchbuffer" workload. This is triggered by the testcase that submits exactly this kind of workload after a simulated GPU reset. I'm not sure how likely the bug would have triggered otherwise, since we would have applied the workaround anyway shortly after the GPU reset, when enabling GT powersaving from the deferred work. This may also fix unrelated issues, since during driver loading / suspending we also disable RPS interrupts and so we also had a short window during the rest of the loading / resuming where a similar workload could run without the workaround applied. v2: - separate the fix to route RPS interrupts to the CPU on GEN9 too to a separate patch (Daniel) Bisected-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Testcase: igt/gem_reset_stats/ban-ctx-render Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87429 Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com>		2015-01-12 10:52:41 +02:00
..
drm	drm/i915: fix HW lockup due to missing RPS IRQ workaround on GEN6	2015-01-12 10:52:41 +02:00
host1x	gpu: host1x: mipi: Set MIPI_CAL_BIAS_PAD_CFG1 register	2014-11-13 16:11:57 +01:00
ipu-v3	[media] gpu: ipu-v3: Make use of media_bus_format enum	2014-11-14 17:55:27 -02:00
vga	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 16:23:15 +02:00
Makefile	gpu: ipu-v3: Move i.MX IPUv3 core driver out of staging	2014-06-04 11:06:52 +02:00