drm/i915: Remove ppgtt->dirty_engines

This is no longer used anywhere and so can be removed. However, tracking
the dirty status on the ppgtt doesn't work very well if the ppgtt is
shared, so perhaps for the best that it is no longer required.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190830180000.24608-3-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 3c50cea76dc5c733d6507923b0e07655d31d952f..ee51fd1a62074e8f12252d30e333bb065f5ef58f 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -823,17 +823,6 @@ release_pd_entry(struct i915_page_directory * const pd,
        return free;
 }
 
-/*
- * PDE TLBs are a pain to invalidate on GEN8+. When we modify
- * the page table structures, we mark them dirty so that
- * context switching/execlist queuing code takes extra steps
- * to ensure that tlbs are flushed.
- */
-static void mark_tlbs_dirty(struct i915_ppgtt *ppgtt)
-{
-       ppgtt->pd_dirty_engines = ALL_ENGINES;
-}
-
 static void gen8_ppgtt_notify_vgt(struct i915_ppgtt *ppgtt, bool create)
 {
        struct drm_i915_private *dev_priv = ppgtt->vm.i915;
@@ -1735,10 +1724,8 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
        }
        spin_unlock(&pd->lock);
 
-       if (flush) {
-               mark_tlbs_dirty(&ppgtt->base);
+       if (flush)
                gen6_ggtt_invalidate(vm->gt->ggtt);
-       }
 
        goto out;
 
@@ -1833,7 +1820,6 @@ static int pd_vma_bind(struct i915_vma *vma,
        gen6_for_all_pdes(pt, ppgtt->base.pd, pde)
                gen6_write_pde(ppgtt, pde, pt);
 
-       mark_tlbs_dirty(&ppgtt->base);
        gen6_ggtt_invalidate(ggtt);
 
        return 0;

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 576f6fb95d135f95007533c6ccdf110aaf86db94..07c85c134d4c47bb1d4a6fb32ba5cf08e55ddc98 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -422,7 +422,6 @@ struct i915_ggtt {
 struct i915_ppgtt {
        struct i915_address_space vm;
 
-       intel_engine_mask_t pd_dirty_engines;
        struct i915_page_directory *pd;
 };