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drm/i915/bdw: Restore PPAT on thaw 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -30,6 +30,8 @@
#include "i915_trace.h" #include "i915_trace.h"
#include "intel_drv.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) bool intel_enable_ppgtt(struct drm_device *dev, bool full)
{ {
if (i915.enable_ppgtt == 0 || !HAS_ALIASING_PPGTT(dev)) 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; return;
}
list_for_each_entry(vm, &dev_priv->vm_list, global_link) { list_for_each_entry(vm, &dev_priv->vm_list, global_link) {
/* TODO: Perhaps it shouldn't be gen6 specific */ /* TODO: Perhaps it shouldn't be gen6 specific */