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The Scalar Crypto specification defines Zk as a shorthand for the Zkn, Zkr and Zkt extensions. The same follows for both Zkn, Zks and Zbk, which are all shorthands for various other extensions. The detailed breakdown can be found in their dt-binding entries. Since Zkn also implies the Zbkb, Zbkc and Zbkx extensions, simply passing "zk" through a DT should enable all of Zbkb, Zbkc, Zbkx, Zkn, Zkr and Zkt. For example, setting the "riscv,isa" DT property to "rv64imafdc_zk" should generate the following cpuinfo output: "rv64imafdc_zicntr_zicsr_zifencei_zihpm_zbkb_zbkc_zbkx_zknd_zkne_zknh_zkr_zkt" riscv_isa_ext_data grows a pair of new members, to permit setting the relevant bits for "bundled" extensions, both while parsing the ISA string and the new dedicated extension properties. Co-developed-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Evan Green <evan@rivosinc.com> Signed-off-by: Clément Léger <cleger@rivosinc.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20231114141256.126749-4-cleger@rivosinc.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 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.