mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-04 19:28:29 +00:00
d5baf4da91
This commit implements `riscv_hwprobe`-based feature detection as available on newer versions of the Linux kernel. It also queries whether the vector extensions are enabled using `prctl` but this is not supported on QEMU's userland emulator (as of version 9.2.3) and use the auxiliary vector as a fallback. Currently, all extensions discoverable from the Linux kernel version 6.14 and related extension groups (except "Supm", which reports the existence of `prctl`-based pointer masking control and too OS-dependent) are implemented. Co-Authored-By: Taiki Endo <te316e89@gmail.com>