[jdk11u-dev] RFR: 8255254: Split os::reserve_memory and os::map_memory_to_file interfaces

Wed Dec 8 00:10:17 UTC 2021

On Tue, 2 Nov 2021 15:54:22 GMT, Vladimir Kempik <vkempik at openjdk.org> wrote:

> Please review this backport of JDK-8255254 to jdk11u-dev.
> This is a prerequest for mac-aarch64 and MAP_JIT support
> 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

I believe these are covered under the same criterium as this backport, namely,

"Changes necessary to make 11u work on new operating systems and hardware."

The less confusing the backport, the better, imo. I've done the 8253639 backport (see https://github.com/openjdk/jdk11u-dev/pull/699), and would be happy to do the 8253650 backport too. It would be great if you could review https://github.com/openjdk/jdk11u-dev/pull/699.

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/578