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93c0651617
Adds support for Svpbmt, the "Supervisor-mode: page-based memory types" extension, which allows pages to be marked as non-cacheable and/or I/O. This also includes support for the Allwinner D1's page table attributes via the alternatives framework, which differ from Svpbmt in various ways but are necessary to make the D1 function. * palmer/riscv-d1: riscv: add memory-type errata for T-Head riscv: don't use global static vars to store alternative data riscv: remove FIXMAP_PAGE_IO and fall back to its default value riscv: add RISC-V Svpbmt extension support riscv: Fix accessing pfn bits in PTEs for non-32bit variants riscv: move boot alternatives to after fill_hwcap riscv: prevent compressed instructions in alternatives riscv: extend concatenated alternatives-lines to the same length riscv: implement ALTERNATIVE_2 macro riscv: implement module alternatives riscv: allow different stages with alternatives riscv: integrate alternatives better into the main architecture
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.