[aarch64-port-dev ] [OpenJDK8u] java.nio.Bits.unaligned() doesn't handle aarch64

[White, Derek]

Hi Andrew,

No problem, but I'm not sure if you want me to remove the "ppc" code in my patch, or add the similar "aarch64" to the remainder of the ppc patch.

Thanks!

 - Derek

-----Original Message-----
From: Andrew Haley [mailto:aph at redhat.com] 
Sent: Thursday, May 11, 2017 3:41 PM
To: White, Derek <Derek.White at cavium.com>; aarch64-port-dev at openjdk.java.net
Subject: Re: [aarch64-port-dev ] [OpenJDK8u] java.nio.Bits.unaligned() doesn't handle aarch64

On 11/05/17 18:20, White, Derek wrote:

> In mainline jdk8u, this was updated to include PPC as well (See 
> https://bugs.openjdk.java.net/browse/JDK-8165231). JDK9 has a much 
> better fix that supports aarch64 already.
> 
> Tested on Spark and off-heap memory was being used. Note: The PPC fix 
> also patched sun/security/provider/ByteArrayAccess.java, but I didn't 
> include this in the patch below (not sure if it matters, or how to 
> test it).

It's not a great idea to introduce a patch that will conflict with a patch we haven't yet merged.  We will get all the patches from jdk8u eventually, but we only merge from security updates and peroper releases.  I think we should add aarch64 support now, given that upstream jdk8u will never support it.

Andrew.