[riscv-port-jdk11u:riscv-port] RFR: 8297697: RISC-V: Add support for SATP mode detection [v2]

[Feilong Jiang]

On Tue, 9 Apr 2024 08:50:43 GMT, Gui Cao <gcao at openjdk.org> wrote:

>> Hi,
>> Please review this backport to riscv-port-jdk11u.
>> Backport of [JDK-8297697](https://bugs.openjdk.org/browse/JDK-8297697), and [JDK-8301067](https://bugs.openjdk.org/browse/JDK-8301067). JDK-8301067 only modifies the log description information introduced by JDK-8297697.
>> 
>> After this patch, If it is an unsupported satp.mode , the message will be as follows:
>> 
>> root at qemuriscv64:~/jdk/bin# ./java -version
>> Error occurred during initialization of VM
>> Unsupported satp mode: sv57
>> 
>> root at qemuriscv64:~/jdk/bin# cat /proc/cpuinfo
>> processor       : 0
>> hart            : 0
>> isa             : rv64imafdch_zicbom_zicboz_zicntr_zicsr_zifencei_zihintpause_zihpm_zba_zbb_zbs_sstc
>> mmu             : sv57
>> mvendorid       : 0x0
>> marchid         : 0x0
>> mimpid          : 0x0
>> 
>> 
>> Testing:
>> 
>> - [ ] Run tier1 tests on SOPHON SG2042 (release)
>
> Gui Cao has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8301067: RISC-V: better error message when reporting unsupported satp modes

looks good, thanks.

-------------

Marked as reviewed by fjiang (Author).

PR Review: https://git.openjdk.org/riscv-port-jdk11u/pull/19#pullrequestreview-1988715428