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44e9754d63
book3s/32 has two main families: - CPU with 603 cores that don't have HASH PTE table and perform SW TLB loading. - Other CPUs based on 604+ cores that have HASH PTE table. This leads to some complex logic and additionnal code to support both. This makes sense for distribution kernels that aim at running on any CPU, but when you are fine tuning a kernel for an embedded 603 based board you don't need all the HASH logic. Allow selection of support for each family, in order to opt out unneeded parts of code. At least one must be selected. Note that some of the CPU supporting HASH also support SW TLB loading, however it is not supported by Linux kernel at the time being, because they do not have alternate registers in the TLB miss exception handlers. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8dde0cdb629a71abc29b0d85a52a86e920376cb6.1603348103.git.christophe.leroy@csgroup.eu |
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| drivers | ||
| fs | ||
| include | ||
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| ipc | ||
| kernel | ||
| lib | ||
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| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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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.