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The riscv_hwprobe system call was introduced in Linux 6.4 and allows the caller to determine a number of interesting pieces of information about the underlying RISC-V CPUs, e.g., which extensions they support and whether they allow fast unaligned memory accesses. For more information please see: https://docs.kernel.org/riscv/hwprobe.html We also update linux/mksysnum.go to ensure that the generated syscall constants written to the zsysnum_linux_*.go files are always sorted by their syscall numbers in ascending order. Updates golang/go#61416 Change-Id: Iedb0a86adb65faac9061b9a5969ffa09eb5b303a Reviewed-on: https://go-review.googlesource.com/c/sys/+/510795 TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Run-TryBot: Ian Lance Taylor <iant@google.com>