On 10/05/2022 21:33, Andi Shyti wrote:
During object cleanup we invalidate the TLBs but we do it only
for gt0. Invalidate the caches for all the tiles.

Reported-by: Chris Wilson <ch...@chris-wilson.co.uk>
Signed-off-by: Andi Shyti <andi.sh...@linux.intel.com>
---
  drivers/gpu/drm/i915/gem/i915_gem_pages.c | 11 ++++++++---
  1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c 
b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
index 97c820eee115a..444b9f96ba77c 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
@@ -217,10 +217,15 @@ __i915_gem_object_unset_pages(struct drm_i915_gem_object 
*obj)
if (test_and_clear_bit(I915_BO_WAS_BOUND_BIT, &obj->flags)) {
                struct drm_i915_private *i915 = to_i915(obj->base.dev);
-               intel_wakeref_t wakeref;
+               struct intel_gt *gt;
+               int i;
- with_intel_runtime_pm_if_active(&i915->runtime_pm, wakeref)
-                       intel_gt_invalidate_tlbs(to_gt(i915));
+               for_each_gt(gt, i915, i) {
+                       intel_wakeref_t w;
+
+                       with_intel_runtime_pm_if_active(gt->uncore->rpm, w)
+                               intel_gt_invalidate_tlbs(gt);
+               }

LGTM.

Reviewed-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>

How about an improvement, either immediately or as followup, to define per tile 
bound flags and so be able to avoid trashing innocent tiles?

Like:

i915_vma_bind:

  set_bit(I915_BO_WAS_BOUND_BIT(vma->vm->gt->info.id), &vma->obj->flags);


__i915_gem_object_unset_pages:

  for_each_gt(gt, i915, i) {
        if (!test_and_clear_bit(I915_BO_WAS_BOUND_BIT(i), &obj->flags))
                continue;

        ...
  }

Regards,

Tvrtko

        }
return pages;

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