From: Lyude Paul <lyude@redhat.com>
To: nouveau@lists.freedesktop.org, Gary Guo <gary@garyguo.net>,
Daniel Almeida <daniel.almeida@collabora.com>,
rust-for-linux@vger.kernel.org,
Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Maurer <mmaurer@google.com>,
FUJITA Tomonori <fujita.tomonori@gmail.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
christian.koenig@amd.com, Asahi Lina <lina@asahilina.net>,
Miguel Ojeda <ojeda@kernel.org>,
Andreas Hindborg <a.hindborg@kernel.org>,
Simona Vetter <simona@ffwll.ch>,
Alice Ryhl <aliceryhl@google.com>, Boqun Feng <boqun@kernel.org>,
Sumit Semwal <sumit.semwal@linaro.org>,
Krishna Ketan Rai <prafulrai522@gmail.com>,
linux-media@vger.kernel.org,
Shankari Anand <shankari.ak0208@gmail.com>,
David Airlie <airlied@gmail.com>,
Benno Lossin <lossin@kernel.org>,
Viresh Kumar <viresh.kumar@linaro.org>,
linaro-mm-sig@lists.linaro.org,
Asahi Lina <lina+kernel@asahilina.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
kernel@vger.kernel.org
Subject: [PATCH v9 2/7] rust: drm: gem: Add raw_dma_resv() function
Date: Mon, 16 Mar 2026 17:16:10 -0400 [thread overview]
Message-ID: <20260316211646.650074-3-lyude@redhat.com> (raw)
In-Reply-To: <20260316211646.650074-1-lyude@redhat.com>
For retrieving a pointer to the struct dma_resv for a given GEM object. We
also introduce it in a new trait, BaseObjectPrivate, which we automatically
implement for all gem objects and don't expose to users outside of the
crate.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Janne Grunau <j@jananu.net>
---
rust/kernel/drm/gem/mod.rs | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/rust/kernel/drm/gem/mod.rs b/rust/kernel/drm/gem/mod.rs
index 94e7c2a7293d0..bcec62155c02d 100644
--- a/rust/kernel/drm/gem/mod.rs
+++ b/rust/kernel/drm/gem/mod.rs
@@ -197,6 +197,18 @@ fn create_mmap_offset(&self) -> Result<u64> {
impl<T: IntoGEMObject> BaseObject for T {}
+/// Crate-private base operations shared by all GEM object classes.
+#[expect(unused)]
+pub(crate) trait BaseObjectPrivate: IntoGEMObject {
+ /// Return a pointer to this object's dma_resv.
+ fn raw_dma_resv(&self) -> *mut bindings::dma_resv {
+ // SAFETY: `as_gem_obj()` always returns a valid pointer to the base DRM gem object
+ unsafe { (*self.as_raw()).resv }
+ }
+}
+
+impl<T: IntoGEMObject> BaseObjectPrivate for T {}
+
/// A base GEM object.
///
/// # Invariants
--
2.53.0
WARNING: multiple messages have this Message-ID (diff)
From: Lyude Paul <lyude@redhat.com>
To: nouveau@lists.freedesktop.org, Gary Guo <gary@garyguo.net>,
Daniel Almeida <daniel.almeida@collabora.com>,
rust-for-linux@vger.kernel.org,
Danilo Krummrich <dakr@kernel.org>
Cc: Matthew Maurer <mmaurer@google.com>,
FUJITA Tomonori <fujita.tomonori@gmail.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
christian.koenig@amd.com, Asahi Lina <lina@asahilina.net>,
Miguel Ojeda <ojeda@kernel.org>,
Andreas Hindborg <a.hindborg@kernel.org>,
Simona Vetter <simona@ffwll.ch>,
Alice Ryhl <aliceryhl@google.com>, Boqun Feng <boqun@kernel.org>,
Sumit Semwal <sumit.semwal@linaro.org>,
Krishna Ketan Rai <prafulrai522@gmail.com>,
linux-media@vger.kernel.org,
Shankari Anand <shankari.ak0208@gmail.com>,
Benno Lossin <lossin@kernel.org>,
Viresh Kumar <viresh.kumar@linaro.org>,
linaro-mm-sig@lists.linaro.org,
Asahi Lina <lina+kernel@asahilina.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
kernel@vger.kernel.org
Subject: [PATCH v9 2/7] rust: drm: gem: Add raw_dma_resv() function
Date: Mon, 16 Mar 2026 17:16:10 -0400 [thread overview]
Message-ID: <20260316211646.650074-3-lyude@redhat.com> (raw)
In-Reply-To: <20260316211646.650074-1-lyude@redhat.com>
For retrieving a pointer to the struct dma_resv for a given GEM object. We
also introduce it in a new trait, BaseObjectPrivate, which we automatically
implement for all gem objects and don't expose to users outside of the
crate.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Janne Grunau <j@jananu.net>
---
rust/kernel/drm/gem/mod.rs | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/rust/kernel/drm/gem/mod.rs b/rust/kernel/drm/gem/mod.rs
index 94e7c2a7293d0..bcec62155c02d 100644
--- a/rust/kernel/drm/gem/mod.rs
+++ b/rust/kernel/drm/gem/mod.rs
@@ -197,6 +197,18 @@ fn create_mmap_offset(&self) -> Result<u64> {
impl<T: IntoGEMObject> BaseObject for T {}
+/// Crate-private base operations shared by all GEM object classes.
+#[expect(unused)]
+pub(crate) trait BaseObjectPrivate: IntoGEMObject {
+ /// Return a pointer to this object's dma_resv.
+ fn raw_dma_resv(&self) -> *mut bindings::dma_resv {
+ // SAFETY: `as_gem_obj()` always returns a valid pointer to the base DRM gem object
+ unsafe { (*self.as_raw()).resv }
+ }
+}
+
+impl<T: IntoGEMObject> BaseObjectPrivate for T {}
+
/// A base GEM object.
///
/// # Invariants
--
2.53.0
next prev parent reply other threads:[~2026-03-16 21:17 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-16 21:16 [PATCH v9 0/7] Rust bindings for gem shmem Lyude Paul
2026-03-16 21:16 ` Lyude Paul
2026-03-16 21:16 ` [PATCH v9 1/7] rust: drm: Add gem::impl_aref_for_gem_obj! Lyude Paul
2026-03-16 21:16 ` Lyude Paul
2026-03-16 21:16 ` Lyude Paul [this message]
2026-03-16 21:16 ` [PATCH v9 2/7] rust: drm: gem: Add raw_dma_resv() function Lyude Paul
2026-03-16 21:16 ` [PATCH v9 3/7] rust: helpers: Add bindings/wrappers for dma_resv_lock Lyude Paul
2026-03-16 21:16 ` Lyude Paul
2026-03-16 21:16 ` [PATCH v9 4/7] rust: gem: Introduce DriverObject::Args Lyude Paul
2026-03-16 21:16 ` Lyude Paul
2026-03-16 21:16 ` [PATCH v9 5/7] rust: drm: gem: shmem: Add DRM shmem helper abstraction Lyude Paul
2026-03-16 21:16 ` Lyude Paul
2026-03-26 1:14 ` Danilo Krummrich
2026-03-26 1:14 ` Danilo Krummrich
2026-03-16 21:16 ` [PATCH v9 6/7] rust: drm: gem: Introduce shmem::SGTable Lyude Paul
2026-03-16 21:16 ` Lyude Paul
2026-03-16 21:16 ` [PATCH v9 7/7] rust: drm/gem: Add vmap functions to shmem bindings Lyude Paul
2026-03-16 21:16 ` Lyude Paul
2026-03-20 9:30 ` Alvin Sun
2026-03-20 9:30 ` Alvin Sun
2026-03-26 1:15 ` (subset) [PATCH v9 0/7] Rust bindings for gem shmem Danilo Krummrich
2026-03-26 1:15 ` Danilo Krummrich
2026-03-26 15:37 ` Alice Ryhl
2026-03-26 15:37 ` Alice Ryhl
2026-03-26 16:10 ` Janne Grunau
2026-03-26 16:10 ` Janne Grunau
2026-03-27 9:53 ` Miguel Ojeda
2026-03-27 9:53 ` Miguel Ojeda
2026-03-30 18:42 ` Deborah Brouwer
2026-03-30 18:42 ` Deborah Brouwer
2026-03-27 20:44 ` (subset) " Danilo Krummrich
2026-03-27 20:44 ` Danilo Krummrich
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