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864444130e
The MMU_CTRL register of MT8173 is different from other SoCs. The in_order_wr_en is bit[9] which is zero by default. Other SoCs have the vitcim_tlb_en feature mapped to bit[12]. This bit is set to one by default. We need to preserve the bit when setting F_MMU_TF_PROT_TO_PROGRAM_ADDR as otherwise the bit will be cleared and IOMMU performance will drop. Signed-off-by: Chao Hao <chao.hao@mediatek.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Yong Wu <yong.wu@mediatek.com> Link: https://lore.kernel.org/r/20200703044127.27438-10-chao.hao@mediatek.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
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| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| .clang-format | ||
| .cocciconfig | ||
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| 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 Restructured Text 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.