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4f30ba1cce
The spec_bar() macro was introduced in commitbd4fb6d270("arm64: Add support for SB barrier and patch in over DSB; ISB sequences") as a way for C to insert a speculation barrier and was then used in one single place: set_fs(). Later on commit3d2403fd10("arm64: uaccess: remove set_fs()") deleted set_fs() altogether and as noted in the commit on the new path the regular sb() assembly macro will be used. Delete the remnant. Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20210325141304.1607595-1-linus.walleij@linaro.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.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 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.