> But is it not possible that the FPGA tools don't
> have the same issues with mmap that e.g. Go does?

1. Some of the fpga tools are closed-source so I can't check with
confidence that they will never try to use mmap.

2. The go compiler is open-source so it was a simple matter to make
an experimental variant on linux which uses read/write instead of
mmap (as it does on plan 9). I still get the bus error code=0x2
when running this over v9fs. Hence the remaining v9fs problem is
not mmap related.


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