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f352a28cc2Clément Léger <cleger@rivosinc.com> says: In order to be able to gather more information about the supported ISA extensions from userspace using the hwprobe syscall, add more ISA extensions report. This series adds the following ISA extensions parsing support: - Zfh[min] - Zvfh[min] - Zihintntl - Zbc - Zvbb - Zvbc - Zvkb - Zvkg - Zvkned - Zvknh[ab] - Zvksed - Zvksh - Zvkn - Zvknc - Zvkng - Zvks - Zvksc - Zvksg - Zvkt - Zfa - Zbkb - Zbkc - Zbkx - Zknd - Zkne - Zknh - Zkr - Zksed - Zksh - Zkt Some of these extensions are actually shorthands for other "sub" extensions. This series includes a patch from Conor/Evan that adds a way to specify such "bundled" extensions. When exposing these bundled extensions to userspace through hwprobe, only the "sub" extensions are exposed. In order to test it, one can use qemu and the small hwprobe utility provided[1]. Run qemu by specifying additional ISA extensions, for instance: $ qemu-system-riscv64 -cpu rv64,v=true,zk=true,zvksh=true,zvkned=true <whatever options you want> Then, run hwprobe: $ ./hwprobe Base system ISA: - IMA_FD - C - V Supported extensions: - Zba - Zbb - Zbs - Zbc - Zbkb - Zbkc - Zbkx - Zknd - Zkne - Zknh - Zkt - Zvkned - Zvksh - Zihintntl - Zfa * b4-shazam-merge: dt-bindings: riscv: add Zfa ISA extension description riscv: hwprobe: export Zfa ISA extension riscv: add ISA extension parsing for Zfa dt-bindings: riscv: add Zvfh[min] ISA extension description riscv: hwprobe: export Zvfh[min] ISA extensions riscv: add ISA extension parsing for Zvfh[min] dt-bindings: riscv: add Zihintntl ISA extension description riscv: hwprobe: export Zhintntl ISA extension riscv: add ISA extension parsing for Zihintntl dt-bindings: riscv: add Zfh[min] ISA extensions description riscv: hwprobe: export Zfh[min] ISA extensions riscv: add ISA extension parsing for Zfh/Zfh[min] dt-bindings: riscv: add vector crypto ISA extensions description riscv: hwprobe: export vector crypto ISA extensions riscv: add ISA extension parsing for vector crypto dt-bindings: riscv: add scalar crypto ISA extensions description riscv: hwprobe: add support for scalar crypto ISA extensions riscv: add ISA extension parsing for scalar crypto riscv: hwprobe: export missing Zbc ISA extension riscv: add ISA extension parsing for Zbc Link: https://lore.kernel.org/r/20231114141256.126749-1-cleger@rivosinc.com 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.