[riscv-port] RFR: 8279664: riscv: JFR crashes at 0x0 [v3]

[Fei Yang]

On Fri, 21 Jan 2022 03:21:49 GMT, Xiaolin Zheng <xlinzheng at openjdk.org> wrote:

>> Hi team,
>> 
>> This is a preview fix for the JFR-related crash - maybe the comment in this patch should be polished.
>> TIL that complex problems often result from seemingly negligible changes :-)
>> I need to cautiously test this change, though it seems no harm, to guarantee that it is safe and to ensure the problem is gone so please stay a little tuned.
>> 
>> ----
>> Update:
>> 
>> 1. Overnight JFR testing reveals no error, seems fixed.
>> 2. `test/hotspot/jtreg` on the board reveals no error until now - still testing, but I think it is safe.
>> ----
>> 
>> Thanks,
>> Xiaolin
>
> Xiaolin Zheng has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Polish comments

I see JFR works quite stable with some non-trivial benchmark workload. So good to go. Thanks.

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Marked as reviewed by fyang (Lead).

PR: https://git.openjdk.java.net/riscv-port/pull/49