Merge remote-tracking branch 'drm/drm-next' into drm-rust-next

Backmerge to pull in commit 21fcb222f0d1 ("drm: Remove DRIVER_GEM_GPUVA
feature flag"), which a Tyr patch series depends on.

Signed-off-by: Danilo Krummrich <dakr@kernel.org>

7 files changed, 84 insertions, 5 deletions

diff --git a/Documentation/gpu/amdgpu/display/display-manager.rst b/Documentation/gpu/amdgpu/display/display-manager.rst
index b269ff3f7a54..f6de9e7779e2 100644
--- a/Documentation/gpu/amdgpu/display/display-manager.rst
+++ b/Documentation/gpu/amdgpu/display/display-manager.rst
@@ -32,6 +32,9 @@ Interrupts
 .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
    :functions: register_hpd_handlers dm_crtc_high_irq dm_pflip_high_irq
 
+.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+   :functions: amdgpu_display_hotplug_work_func
+
 Atomic Implementation
 =====================
 
@@ -178,3 +181,9 @@ following path:
 2. On DC interface, :c:type:`struct mpcc_blnd_cfg <mpcc_blnd_cfg>` programs the
    MPCC blend configuration considering the :c:type:`dc_plane_info
    <dc_plane_info>` input from DPP.
+
+Display Properties
+==================
+
+.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+   :doc: property for adaptive backlight modulation
diff --git a/Documentation/gpu/automated_testing.rst b/Documentation/gpu/automated_testing.rst
index 62aa3ede02a5..8a7328aef10e 100644
--- a/Documentation/gpu/automated_testing.rst
+++ b/Documentation/gpu/automated_testing.rst
@@ -99,7 +99,8 @@ How to enable automated testing on your tree
 ============================================
 
 1. Create a Linux tree in https://gitlab.freedesktop.org/ if you don't have one
-yet
+yet, by forking https://gitlab.freedesktop.org/drm/kernel (this allows GitLab
+to internally track that these are the same git objects).
 
 2. In your kernel repo's configuration (eg.
 https://gitlab.freedesktop.org/janedoe/linux/-/settings/ci_cd), change the
diff --git a/Documentation/gpu/drm-kms-helpers.rst b/Documentation/gpu/drm-kms-helpers.rst
index 80453dda33b8..94cfc26acecc 100644
--- a/Documentation/gpu/drm-kms-helpers.rst
+++ b/Documentation/gpu/drm-kms-helpers.rst
@@ -171,6 +171,12 @@ Bridge Operations
 .. kernel-doc:: drivers/gpu/drm/drm_bridge.c
    :doc: bridge operations
 
+Bridge Chain Format Selection
+-----------------------------
+
+.. kernel-doc:: drivers/gpu/drm/drm_bridge.c
+   :doc: bridge chain format selection
+
 Bridge Connector Helper
 -----------------------
 
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index fa69a5450f96..0dd440a14946 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -287,6 +287,12 @@ structure, ordering of committing state changes to hardware is sequenced using
 Read on in this chapter, and also in :ref:`drm_atomic_helper` for more detailed
 coverage of specific topics.
 
+Atomic State Lifetime
+---------------------
+
+.. kernel-doc:: drivers/gpu/drm/drm_atomic.c
+   :doc: state lifetime
+
 Handling Driver Private State
 -----------------------------
 
@@ -604,6 +610,12 @@ Color Management Properties
 .. kernel-doc:: drivers/gpu/drm/drm_color_mgmt.c
    :doc: overview
 
+Color Format Property
+---------------------
+
+.. kernel-doc:: drivers/gpu/drm/drm_connector.c
+   :doc: Color format
+
 Tile Group Property
 -------------------
 
diff --git a/Documentation/gpu/intel-display/dp-link-training.rst b/Documentation/gpu/intel-display/dp-link-training.rst
new file mode 100644
index 000000000000..d0bde965021d
--- /dev/null
+++ b/Documentation/gpu/intel-display/dp-link-training.rst
@@ -0,0 +1,8 @@
+.. SPDX-License-Identifier: MIT
+.. Copyright © 2026 Intel Corporation
+
+DisplayPort Link Training
+=========================
+
+.. kernel-doc:: drivers/gpu/drm/i915/display/intel_dp_link_training.c
+   :doc: DisplayPort link training
diff --git a/Documentation/gpu/intel-display/index.rst b/Documentation/gpu/intel-display/index.rst
index 01c3d1e576b7..6fa929d82c38 100644
--- a/Documentation/gpu/intel-display/index.rst
+++ b/Documentation/gpu/intel-display/index.rst
@@ -38,6 +38,7 @@ driver. The display driver isn't an independent driver in that sense.
    fifo-underrun
    frontbuffer
    hotplug
+   dp-link-training
    plane
    psr
    snps-phy
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index cdddf8db35f5..14cf37590fc7 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -55,7 +55,7 @@ There are still drivers that use drm_simple_display_pipe. The task here is to
 convert them to use regular atomic helpers. Search for a driver that calls
 drm_simple_display_pipe_init() and inline all helpers from drm_simple_kms_helper.c
 into the driver, such that no simple-KMS interfaces are required. Please also
-rename all inlined fucntions according to driver conventions.
+rename all inlined functions according to driver conventions.
 
 Contact: Thomas Zimmermann, respective driver maintainer
 
@@ -896,10 +896,11 @@ complection of submission.
 One minor feature still missing is a generic DRM IOCTL to query the error
 status of binary and timeline drm_syncobj.
 
-This should probably be improved by implementing the necessary kernel interface
-and adding support for that in the userspace stack.
+This was already improved by implementing the necessary kernel interface
+(patches are on the dri-devel mailing list) but adding support for that in the
+userspace stack is still missing.
 
-Contact: Christian König
+Contact: Christian König, Michel Dänzer
 
 Level: Starter
 
@@ -948,6 +949,47 @@ Contact: Philipp Stanner <phasta@kernel.org>
 
 Level: Intermediate
 
+Replace the lockless queue with a locked list
+---------------------------------------------
+
+drm_sched is the only user in the entire kernel of a special lockless queue, the
+spsc_queue. This queue utilizes:
+
+- preempt_disable()
+- atomic instructions
+- memory barriers
+- ACCESS_ONCE()
+
+whereas a conventional spinlock utilizes:
+
+- preempt_disable()
+- 1 atomic instruction for taking / releasing the lock
+- memory barriers
+
+Moreover, drm_sched_entity_push_job(), the only user of spsc_queue_push(), has
+to take a lock in some situations anyways and calls to it are often serialized
+with a driver lock.
+
+It is, thus, highly questionable whether the lockless queue grants any advantage
+at all. Considering that its internals are not well documented and its correctness
+is not formally proven, it seems desirable to replace the queue with a mere list
+or hlist that is protected by a spinlock.
+
+Tasks:
+
+- Replace the spsc_queue in drm/sched (and those who might access the scheduler's
+  internal queue) with a spinlock + (h)list.
+- Ideally, check with some micro benchmarks and real world tests (preferably
+  with amdgpu) for relevant performance regressions.
+- Remove the spsc_queue from the kernel altogether.
+
+Contact:
+
+- Philipp Stanner <phasta@kernel.org>
+- Christian König <christian.koenig@amd.com>
+
+Level: Beginner
+
 Outside DRM
 ===========