On Mon, Aug 30, 2021 at 03:25:42AM +0000, Joseph wrote: > > > In this moment on -current, how well does the SiFive Unmatched RISCV64 > > > board work? > > > > > > E.g. multiple core support, PCIe. > > > > Works fine. > > > > > E.g. multiple core support, PCIe. > > > > Works, and works. > > > > The "serial cable" can in fact be just a USB-A to Micro-USB cable > > with the A end plugged into a USB port on a laptop or PC. > > > > The micro-SD card must be present to boot OpenBSD (so maybe make > > a backup copy of it?). IDK exactly what files it needs. Maybe > > somebody will figure out how the boot stuff can be flashed into > > flash mem on the motherboard without bricking their board. > > > > And bear in mind the Unmatched is meant to be a developr machine not > > > powerhouse; it lopes along nicely at 1.2GHz with 4 cores. If the RISC-V > > people are right, there will be faster, bigger machines "real soon > > now", in case you need breath-holding practice. > > Hi Mike and Ian, > > Wow. Thank you for letting me know. > > > If the ISA even has it, two questions on the topic of virtualization: > > Is the riscv64 architecture designed in such a way that riscv64 > OpenBSD should work out of the box as guest under a virtualizer, > if-when one exists? >
I know of no hardware capable of this. > And off-topic here, does any VM host exist for riscv64? Without or > with passthrough of PCI/cad/etc. > For OpenBSD, no. > I see this KVM fork but not sure exactly in what environment/ > distribution/setup it works e.g. does it support Unmatched, not even > clear if virtualization is really in the riscv64 ISA spec: > > https://github.com/kvm-riscv/howto/wiki/KVM-RISCV64-on-QEMU > https://lwn.net/Articles/856685/ > https://lists.riscv.org/g/tech-privileged/topic/risc_v_h_extension_freeze/80346318?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,80346318 > https://lwn.net/ml/linux-kernel/CAAhSdy0F7gisk=fzxn7jmqflvb3456wunwvxhkrnvnuwtrh...@mail.gmail.com/ > > Perhaps this q is too early for riscv64 and to be revisited later. > Yes > Best regards, > Joseph > > (Related: https://news.ycombinator.com/item?id=27592187 > 38bit vmem upped to 48 https://www.sifive.com/cores/performance-p550 > https://www.anandtech.com/show/16780/intel-to-create-riscv-development-platform-with-sifive-p550-cores-on-7nm-in-2022)
