Stolen regions are not page backed or considered iomem. Prevent flags indicating such. This correctly prevents stolen buffers from attempting to directly map them.
See i915_gem_object_has_struct_page() and i915_gem_object_has_iomem() usage for where it would break otherwise.
Signed-off-by: Robert Beckett bob.beckett@collabora.com Reviewed-by: Thomas Hellström thomas.hellstrom@linux.intel.com --- drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 6 ++++-- 1 file changed, 4 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..48046cfd8c4b 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c @@ -14,6 +14,7 @@ #include "gem/i915_gem_region.h" #include "gem/i915_gem_ttm.h" #include "gem/i915_gem_ttm_move.h" +#include "gem/i915_gem_stolen.h"
#include "gt/intel_engine_pm.h" #include "gt/intel_gt.h" @@ -122,8 +123,9 @@ 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 (!i915_gem_object_is_stolen(obj)) + 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);