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2268169c14
This reverts commit6deaa3bbca("s390: extend expoline to BC instructions"). Expolines to BC instructions were added to be utilized by commitde5cb6eb51("s390: use expoline thunks in the BPF JIT"). But corresponding code has been removed by commite1cf4befa2("bpf, s390x: remove ld_abs/ld_ind"). And compiler does not generate such expolines as well. Compared to regular expolines, expolines to BC instructions contain displacement and all possible variations cannot be generated in advance, making kpatch support more complicated. So, remove those to avoid future usages. Acked-by: Heiko Carstens <hca@linux.ibm.com> Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.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.