diff mbox series

[RFC,v3,06/17] drm/i915/dmabuf: Deny the dmabuf export for VM private BOs

Message ID 20220827194403.6495-7-andi.shyti@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915/vm_bind: Add VM_BIND functionality | expand

Commit Message

Andi Shyti Aug. 27, 2022, 7:43 p.m. UTC 
From: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>

VM private BOs can be only mapped on specified VM and cannot be dmabuf
exported.

Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index f5062d0c63336..6433173c3e84d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -218,6 +218,12 @@  struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags)
 	struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
 	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
 
+	if (obj->priv_root) {
+		drm_dbg(obj->base.dev,
+			"Exporting VM private objects is not allowed\n");
+		return ERR_PTR(-EINVAL);
+	}
+
 	exp_info.ops = &i915_dmabuf_ops;
 	exp_info.size = gem_obj->size;
 	exp_info.flags = flags;