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3d50e61a17
We need to save the reservation object pointer associated with the
imported dmabuf in the newly created GEM object to allow
drm_gem_plane_helper_prepare_fb() to extract the exclusive fence
from it and attach it to the plane state during prepare phase.
This is needed to ensure that drm_atomic_helper_wait_for_fences()
correctly waits for the relevant fences (move, etc) associated with
the reservation object, thereby implementing proper synchronization.
Otherwise, artifacts or slight flickering can be seen when apps
are dragged across the screen when running Gnome (Wayland). This
problem is mostly seen with dGPUs in the case where the FBs are
allocated in VRAM but need to be migrated to System RAM as they
are shared with virtio-gpu.
Fixes:
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.