[aarch64-port-dev ] Bring AArch64 into jdk8u mainline, pros/cons?

[Andrew Haley]

Hi,

On 3/26/19 5:12 AM, Patrick Zhang OS wrote:

> I am not sure whether there had been similar discussion before. It
> seems to me bringing aarch64 into jdk8u mainline can be a positive.
> 
> The sustaining efficiency of patches/features among jdk/jdk, jdk8u
> main, and aarch64-port/jdk8u-shenandoah can be improved, whilst the
> process could be well aligned with those of other jdk updates, i.e.,
> 11u, 12u, etc. While we would have to take care of patches (ported
> to aarch64-port/jdk8u-shenandoah) more strictly, allow fewer
> customizations, than before, to ensure a low rate of potential
> side-effects to main and other ports.

Sure, it'd save some work, especially at CPU time, but it's not a huge
amount of work. It's on the list of things to consider, but not at the
top of the list.

> Recently I personally reviewed and tested some jdk8u open source
> projects, derived from OpenJDK 8u mainline, it is a pity that
> initially aarch64 was not in (someone did the porting later
> on).

"Someone" was initially Andrew Dinn and me. The patch wasn't ready at
JDK 8 time. It's not a pity, it just is.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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