RFR: 8321075: RISC-V: UseSystemMemoryBarrier lacking proper OS support [v2]

[Robbin Ehn]

On Tue, 20 Feb 2024 02:58:57 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fixed version check
>
> LGTM. Guess that's what we can do for now. I don't have a better solution either.

Thanks @RealFYang!

> src/hotspot/os/linux/systemMemoryBarrier_linux.cpp line 71:
> 
>> 69:   os::Linux::kernel_version(&major, &minor);
>> 70:   if (!(major > 6 || (major == 6 && minor >= 9))) {
>> 71:     log_info(os)("Linux kernel %ld.%ld do not support MEMBARRIER PRIVATE_EXPEDITED on RISC-V.",
> 
> Suggestion: s/do/does/

Fixed

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PR Comment: https://git.openjdk.org/jdk/pull/17889#issuecomment-1953548657
PR Review Comment: https://git.openjdk.org/jdk/pull/17889#discussion_r1495288697