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18efe86bf2Charlie Jenkins <charlie@rivosinc.com> says: Adds support for detecting and reporting the speed of unaligned vector accesses on RISC-V CPUs. Adds vec_misaligned_speed key to the hwprobe adds Zicclsm to cpufeature and fixes the check for scalar unaligned emulated all CPUs. The vec_misaligned_speed key keeps the same format as the scalar unaligned access speed key. This set does not emulate unaligned vector accesses on CPUs that do not support them. Only reports if userspace can run them and speed of unaligned vector accesses if supported. * b4-shazam-merge: RISC-V: hwprobe: Document unaligned vector perf key RISC-V: Report vector unaligned access speed hwprobe RISC-V: Detect unaligned vector accesses supported RISC-V: Replace RISCV_MISALIGNED with RISCV_SCALAR_MISALIGNED RISC-V: Scalar unaligned access emulated on hotplug CPUs RISC-V: Check scalar unaligned access on all CPUs Link: https://lore.kernel.org/r/20241017-jesse_unaligned_vector-v10-0-5b33500160f8@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 reStructuredText 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.