[PATCH 1/1] riscv: Get cache information through sysconf

[Zong Li]

On Mon, Oct 26, 2020 at 4:27 PM Florian Weimer <fw@deneb.enyo.de> wrote:
>
> * Zong Li:
>
> > Add support to query cache information on RISC-V through sysconf()
> > function. The cache information had been added in AUX vector of RISC-V
> > architecture in Linux kernel v.5.10-rc1.
>
> I think this needs error reporting in case the auxiliary vector does
> not contain the requested information.

Does the error reporting mean that we need to check the errno and
return the error number when AUX vector is unavailable?