We don’t actually have riscv64 hardware in our datacentre, since we’d need server-class hardware with the hypervisor extension and that’s still in its infancy instead, we do full-system emulation of riscv64 on beefy amd64 hardware
Launchpad has supported building for riscv64 for a while, since it was a requirement to get Ubuntu’s riscv64 port going.
