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A mirror of the official Linux kernel repository just in case
c66f4711f7
For CCS formats on affected platforms, CCS can be used freely, but display engine requires a multiple of 64k physical pages. No other changes are needed. At the BO creation time we don't know if the BO will be used for CCS or not. If the scanout flag is set, and the BO is a multiple of 64k, we take the safe route and force the physical alignment of 64k pages. If the BO is not a multiple of 64k, or the scanout flag was not set at BO creation, we reject it for usage as CCS in display. The physical pages are likely not aligned correctly, and this will cause corruption when used as FB. The scanout flag and size being a multiple of 64k are used together to enforce 64k physical placement. VM_BIND is completely unaffected, mappings to a VM can still be aligned to 4k, just like for normal buffers. Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Juha-Pekka Heikkilä <juha-pekka.heikkila@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240826170117.327709-3-maarten.lankhorst@linux.intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> |
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| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
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| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
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| 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.