From b050e685044221099ed88748bfb6853a53c3d479 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 6 Dec 2017 12:49:13 +0000 Subject: [PATCH] drm/i915: Remove vma from object on destroy, not close Originally we translated from the object to the vma by walking obj->vma_list to find the matching vm (for user lookups). Now we process user lookups using the rbtree, and we only use obj->vma_list itself for maintaining state (e.g. ensuring that all vma are flushed or rebound). As such maintenance needs to go on beyond the user's awareness of the vma, defer removal of the vma from the obj->vma_list from i915_vma_close() to i915_vma_destroy() Fixes: 5888fc9eac3c ("drm/i915: Flush pending GTT writes before unbinding") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104155 Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Cc: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20171206124914.19960-1-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen --- drivers/gpu/drm/i915/i915_gem.c | 3 ++- drivers/gpu/drm/i915/i915_vma.c | 4 +++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index eea63dd..af6758b 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3746,7 +3746,8 @@ int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, return -EBUSY; } - if (i915_gem_valid_gtt_space(vma, cache_level)) + if (!i915_vma_is_closed(vma) && + i915_gem_valid_gtt_space(vma, cache_level)) continue; ret = i915_vma_unbind(vma); diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index bf6d8d1..1013403 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -466,6 +466,7 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) u64 start, end; int ret; + GEM_BUG_ON(i915_vma_is_closed(vma)); GEM_BUG_ON(vma->flags & (I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND)); GEM_BUG_ON(drm_mm_node_allocated(&vma->node)); @@ -678,7 +679,9 @@ static void i915_vma_destroy(struct i915_vma *vma) GEM_BUG_ON(i915_gem_active_isset(&vma->last_read[i])); GEM_BUG_ON(i915_gem_active_isset(&vma->last_fence)); + list_del(&vma->obj_link); list_del(&vma->vm_link); + if (!i915_vma_is_ggtt(vma)) i915_ppgtt_put(i915_vm_to_ppgtt(vma->vm)); @@ -690,7 +693,6 @@ void i915_vma_close(struct i915_vma *vma) GEM_BUG_ON(i915_vma_is_closed(vma)); vma->flags |= I915_VMA_CLOSED; - list_del(&vma->obj_link); rb_erase(&vma->obj_node, &vma->obj->vma_tree); if (!i915_vma_is_active(vma) && !i915_vma_is_pinned(vma)) -- 2.7.3