[PATCH 2/5] drm/i915: sanitize mem_flags for stolen buffers

From: Robert Beckett
Date: Mon Apr 11 2022 - 15:25:59 EST


stolen regions are not page backed or considered iomem.

Signed-off-by: Robert Beckett <bob.beckett@xxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
index 358f8a1a30ce..9fe8132de3b2 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
@@ -122,8 +122,9 @@ void i915_ttm_adjust_gem_after_move(struct drm_i915_gem_object *obj)

obj->mem_flags &= ~(I915_BO_FLAG_STRUCT_PAGE | I915_BO_FLAG_IOMEM);

- obj->mem_flags |= i915_ttm_cpu_maps_iomem(bo->resource) ? I915_BO_FLAG_IOMEM :
- I915_BO_FLAG_STRUCT_PAGE;
+ if (obj->mm.region->id != INTEL_REGION_STOLEN_SMEM)
+ obj->mem_flags |= i915_ttm_cpu_maps_iomem(bo->resource) ? I915_BO_FLAG_IOMEM :
+ I915_BO_FLAG_STRUCT_PAGE;

cache_level = i915_ttm_cache_level(to_i915(bo->base.dev), bo->resource,
bo->ttm);
--
2.25.1