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b07de94d45Heiko Stuebner <heiko@sntech.de> says: From: Heiko Stuebner <heiko.stuebner@vrull.eu> This series is split out of my work on optimizing string functions and provides the basics to: - actually allowing calls in alternatives Function calls use auipc + jalr to reach those 32bit relative addresses but when they're compiled the offset will be wrong as alternatives live in a different section. So when the patch gets applied the address will point to the wrong location. So similar to arm64 the target addresses need to be updated. This is probably also helpful for other things needing more complex code in alternatives. For v2 I got into some sort of cleanup spree for the general instruction parsing that already existed. A number of places do their own instruction parsing and I tried consolidating some of them. Noteable, the kvm parts still do, but I had to stop somewhere :-) * b4-shazam-merge: RISC-V: fix auipc-jalr addresses in patched alternatives RISC-V: add helpers for handling immediates in U-type and I-type pairs RISC-V: add rd reg parsing to insn.h header RISC-V: add U-type imm parsing to insn.h header RISC-V: kprobes: use central defined funct3 constants RISC-V: rename parse_asm.h to insn.h RISC-V: Move riscv_insn_is_* macros into a common header RISC-V: add auipc elements to parse_asm header RISC-V: add ebreak instructions to definitions RISC-V: detach funct-values from their offset RISC-V: add prefix to all constants/macros in parse_asm.h RISC-V: fix funct4 definition for c.jalr in parse_asm.h Link: https://lore.kernel.org/r/20221223221332.4127602-1-heiko@sntech.de Signed-off-by: Palmer Dabbelt <palmer@rivosinc.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 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.