This allows drivers to control whether a given GEM object is allowed to be exported via PRIME to other drivers. --- rust/kernel/drm/gem/mod.rs | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/rust/kernel/drm/gem/mod.rs b/rust/kernel/drm/gem/mod.rs index e66bdef35c2e..196252a25b5a 100644 --- a/rust/kernel/drm/gem/mod.rs +++ b/rust/kernel/drm/gem/mod.rs @@ -135,6 +135,13 @@ pub trait BaseObject: IntoGEMObject { self.gem_ref().size }
+ /// Sets the exportable flag, which controls whether the object can be exported via PRIME. + fn set_exportable(&mut self, exportable: bool) { + // SAFETY: gem_obj() is valid per the type invariant, and this is safe to write if we + // are the only holder (mutable ref). + unsafe { (*self.gem_obj()).exportable = exportable }; + } + /// Creates a new reference to the object. fn reference(&self) -> ObjectRef<Self> { // SAFETY: Having a reference to an Object implies holding a GEM reference