kernel/linux.git - Linux kernel stable tree (mirror)

Age	Commit message (Collapse)	Author	Files	Lines
2025-07-21	rust: drm: Drop the use of Opaque for ioctl arguments	Beata Michalska	1	-61/+0
	With the Opaque<T>, the expectations are that Rust should not make any assumptions on the layout or invariants of the wrapped C types. That runs rather counter to ioctl arguments, which must adhere to certain data-layout constraints. By using Opaque<T>, ioctl handlers are forced to use unsafe code where none is actually needed. This adds needless complexity and maintenance overhead, brining no safety benefits. Drop the use of Opaque for ioctl arguments as that is not the best fit here. Signed-off-by: Beata Michalska <beata.michalska@arm.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20250626162313.2755584-1-beata.michalska@arm.com Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-05-12	drm: nova-drm: add initial driver skeleton	Danilo Krummrich	1	-0/+61
	Add the initial nova-drm driver skeleton. nova-drm is connected to nova-core through the auxiliary bus and implements the DRM parts of the nova driver stack. For now, it implements the fundamental DRM abstractions, i.e. creates a DRM device and registers it, exposing a three sample IOCTLs. DRM_IOCTL_NOVA_GETPARAM - provides the PCI bar size from the bar that maps the GPUs VRAM from nova-core DRM_IOCTL_NOVA_GEM_CREATE - creates a new dummy DRM GEM object and returns a handle DRM_IOCTL_NOVA_GEM_INFO - provides metadata for the DRM GEM object behind a given handle I implemented a small userspace test suite [1] that utilizes this interface. Link: https://gitlab.freedesktop.org/dakr/drm-test [1] Reviewed-by: Maxime Ripard <mripard@kernel.org> Acked-by: Dave Airlie <airlied@redhat.com> Link: https://lore.kernel.org/r/20250424160452.8070-3-dakr@kernel.org [ Kconfig: depend on DRM=y rather than just DRM. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org>