[jdk11u-dev] RFR: 8234930: Use MAP_JIT when allocating pages for code cache on macOS [v2]

[Vladimir Kempik]

On Tue, 2 Nov 2021 20:05:45 GMT, Vladimir Kempik <vkempik at openjdk.org> wrote:

>> Please review this backport of JDK-8234930 to jdk11u-dev.
>> This is a prerequest for mac-aarch64
>> It's not applying clean due to the miss of these two patches
>> JDK-8253639: Change os::attempt_reserve_memory_at parameter order
>> JDK-8253650: Cleanup: remove alignment_hint parameter from os::reserve_memory
>> But they aren't critical and the patch can easily be modified
>
> Vladimir Kempik has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix up windows

Hello
Can I please have a review for this chain of three patches, they are very imprtant for macarm jep backprot, in fact it's last major roadblock.

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/580