RFR: 8309258: RISC-V: Add riscv_hwprobe syscall [v2]

[Robbin Ehn]

On Wed, 14 Jun 2023 02:28:43 GMT, Feilong Jiang <fjiang at openjdk.org> wrote:

> Thanks for the great work, it looks much better now.

Thank you!

> src/hotspot/cpu/riscv/vm_version_riscv.hpp line 186:
> 
>> 184:   static void rivos_features();
>> 185: 
>> 186:   // Determine vector length iff ext_C/UseRVC
> 
> Shouldn't be `ext_V/UseRVV`?

Yes, thanks! I'll fix it!

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PR Comment: https://git.openjdk.org/jdk/pull/14445#issuecomment-1590503195
PR Review Comment: https://git.openjdk.org/jdk/pull/14445#discussion_r1229009871