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6cce048cb3
The ret_addr field in struct addr_ctx contains the intermediate value of the returned address as it passes through multiple steps in the translation process. Currently, adding the DRAM base and legacy hole is only done once, so it operates directly on the intermediate value. However, for DF 4.5 non-power-of-2 denormalization, adding and removing the DRAM base and legacy hole needs to be done for multiple temporary address values. During this process, the intermediate value should not be lost so the ret_addr value can't be reused. Update the existing 'add' helper to operate on an arbitrary address and introduce a new 'remove' helper to do the inverse operations. Signed-off-by: John Allen <john.allen@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com> Link: https://lore.kernel.org/r/20240606203313.51197-4-john.allen@amd.com |
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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.