[PATCH v2 0/3] RISC-V: ifunced memcpy using new kernel hwprobe interface

Palmer Dabbelt palmer@rivosinc.com
Fri Mar 31 21:03:06 GMT 2023


On Fri, 31 Mar 2023 13:19:19 PDT (-0700), jeffreyalaw@gmail.com wrote:

[just snipping the rest so we can focus on Jeff's ask, the other stuff 
is interesting but a longer reply and we'd probably want to fork the 
thread anyway...]

> So perhaps we can narrow down the scope right now even further.  Can we
> agree to try and settle on a base implementation with no ISA extensions
> and no uarch variants?  ISTM if we can settle on those implementations
> that it should be usable immediately by the RV community at large and
> doesn't depend on the kernel->glibc interface work.

That base includes V and ZBB?  In that case we'd be dropping support for 
all existing hardware, which I would be very much against.


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