RFR: 8328306: AArch64: MacOS lazy JIT "write xor execute" switching [v21]

[Andrew Haley]

On Tue, 12 Aug 2025 07:52:50 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> src/hotspot/os/bsd/os_bsd.cpp line 821:
>> 
>>> 819:   // Avoiding excessive CAS operations to hot RW locations is critical.
>>> 820:   // See https://blogs.oracle.com/dave/entry/cas_and_cache_trivia_invalidate
>>> 821:   // https://web.archive.org/web/20131214182431/https://blogs.oracle.com/dave/entry/cas_and_cache_trivia_invalidate
>> 
>> Something is wrong here. Do we need both the original URL and the wayback machine link?
>
>> Something is wrong here. Do we need both the original URL and the wayback machine link?
> 
> I guess not. The original link is (very) dead, but I'm not sure how stable archive.org links are.

Are you OK with this? I'd rather leave the original URL as it is, but add the archived version: it is very useful.

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

PR Review Comment: https://git.openjdk.org/jdk/pull/26562#discussion_r2445326715