RISC-V RVA23 profile support

[Pushkar Kulkarni]

Hi there,

This is a RISC-V question and I hope I am writing to the right list.

In terms of support for RISC-V profiles, I gather from [1] that RVA20 is
currently the default profile; the newest RVA23 is experimental.  From some
digging, I also gathered that Hotspot now supports close to half of the
mandatory extensions of RVA23. Do we have a roadmap, or a plan, for making
RVA23 the default? I ask this in the context of the upcoming Ubuntu 25.10
release raising the RISC-V baseline to RVA23.

Regards,
Pushkar

[1]
https://github.com/openjdk/jdk/blob/28942406020881be79b7543105b9eb2a0dda429e/src/hotspot/cpu/riscv/globals_riscv.hpp#L97
[2] https://www.phoronix.com/news/Ubuntu-25.10-To-Require-RVA23
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