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drm/i915/bdw: Restore PPAT on thaw

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Apparently it is wiped out from under us, and we get some really fun
caching artifacts upon resume (it seems to be WB for all types by
default).

Reported-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: James Ausmus <james.ausmus@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76113
Tested-by: Timo Aaltonen <timo.aaltonen@canonical.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2014-03-18 16:09:37 -07:00 committed by Daniel Vetter
parent 9297ebf29a
commit a2319c08bf
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/i915_gem_gtt.c
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@ -30,6 +30,8 @@
#include "i915_trace.h"
#include "intel_drv.h"
static void gen8_setup_private_ppat(struct drm_i915_private *dev_priv);
bool intel_enable_ppgtt(struct drm_device *dev, bool full)
{
if (i915.enable_ppgtt == 0 || !HAS_ALIASING_PPGTT(dev))
@ -1370,8 +1372,10 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev)
}
if (INTEL_INFO(dev)->gen >= 8)
if (INTEL_INFO(dev)->gen >= 8) {
gen8_setup_private_ppat(dev_priv);
return;
}
list_for_each_entry(vm, &dev_priv->vm_list, global_link) {
/* TODO: Perhaps it shouldn't be gen6 specific */