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d6dcdabafc
Implementations affected by SiFive errata CIP-1200 have a bug which forces the kernel to always use the global variant of the sfence.vma instruction. When affected by this errata, do not attempt to flush a range of addresses; each iteration of the loop would actually flush the whole TLB instead. Instead, minimize the overall number of sfence.vma instructions. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Yunhui Cui <cuiyunhui@bytedance.com> Link: https://lore.kernel.org/r/20240327045035.368512-9-samuel.holland@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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.