[cfarm-users] cfarm95: RISC-V host with RVV 1.0 vector extension

[Baptiste Jonglez]

On 05-10-24, Andy Polyakov via cfarm-users wrote:
> > We are happy to announce the addition of cfarm95, a BPI-F3 machine
> > from BananaPi. This RISC-V machine is based on a SpacemiT K1 SoC
> > with 8 SpacemiT X60 cores. The most interesting feature of this
> > hardware is its implementation of the RVV 1.0 vector extension;
> 
> Cool! There is a problem though. If an asynchronous signal, e.g. SIGALRM, is
> delivered to a thread that is executing vector instruction the application
> crashes with SIGILL. I assume that return-from-signal code path doesn't
> restore some processor state bit. Just in case anybody runs into it...

Interesting!  Do you think the issue comes from the compiler, from the
libc, or from the kernel?  Which compiler are you using?

Baptiste