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c8aef260c8
This is a preparatory rework to allow uncoupling virtual and physical addresses spaces. Currently the order of virtual memory areas is (the lowcore and .amode31 section are skipped, as it is irrelevant): identity mapping (the kernel is contained within) vmemmap vmalloc modules Absolute Lowcore Real Memory Copy In the future the kernel will be mapped separately and placed to the end of the virtual address space, so the layout would turn like this: identity mapping vmemmap vmalloc modules Absolute Lowcore Real Memory Copy kernel However, the distance between kernel and modules needs to be as little as possible, ideally - none. Thus, the Absolute Lowcore and Real Memory Copy areas would stay in the way and therefore need to be moved as well: identity mapping vmemmap Absolute Lowcore Real Memory Copy vmalloc modules kernel To facilitate such layout swap the vmalloc and Absolute Lowcore together with Real Memory Copy areas. As result, the current layout turns into: identity mapping (the kernel is contained within) vmemmap Absolute Lowcore Real Memory Copy vmalloc modules This will allow to locate the kernel directly next to the modules once it gets mapped separately. Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
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| fs | ||
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| kernel | ||
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| virt | ||
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| .editorconfig | ||
| .get_maintainer.ignore | ||
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| .mailmap | ||
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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 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.