> > 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?

And off-topic here, does any VM host exist for riscv64? Without or
with passthrough of PCI/cad/etc.

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.

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)

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