kvmtool : A lightweight tool for hosting KVM guests ( https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git/ )
nemu-xiangshan : NJU EMUlator, a full system x86/mips32/riscv32/riscv64 emulator for teaching ( https://github.com/OpenXiangShan/NEMU )
riscv-pk : RISC-V Proxy Kernel ( https://github.com/riscv-software-src/riscv-pk )
spike : The RISC-V ISA Simulator ( https://github.com/riscv-software-src/riscv-isa-sim )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a riscv
For Paludis use this rsync : rsync://gentoo.zugaina.org/riscv-portage
If you have a problem : ycarus(-at-)zugaina.org