RFR: 8297697: RISC-V: Add support for SATP mode detection [v3]

[Feilong Jiang]

On Wed, 30 Nov 2022 15:11:51 GMT, Ludovic Henry <luhenry at openjdk.org> wrote:

>> Feilong Jiang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   remove sv32
>
> Marked as reviewed by luhenry (Author).

@luhenry @RealFYang -- Thanks!

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PR: https://git.openjdk.org/jdk/pull/11388