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

[Andrew Haley]

On 12/05/17 04:50, Andrew Hughes wrote:
> 
>>> 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.
> 
> The 8u one is https://bugs.openjdk.java.net/browse/JDK-8165231
> 
> It is one of a number I requested be added to Oracle's CPU releases,
> given there doesn't seem to be a feature release (currently referred to
> as 8u152) coming any time. This can be done by adding the 
> 8u-CPU-critical-request tag. See
> https://bugs.openjdk.java.net/browse/JDK-8165231?jql=labels%20%3D%208u-CPU-critical-request
> 
> It seems that some have now been accepted and some rejected, though
> with no explanation as to the reasoning behind either. Fortunately,
> 8165231 is one of the ones that has been approved and so will be in
> 8u141, which is released in July.
> 
> https://bugs.openjdk.java.net/browse/JDK-8179839

OK.  So would you like to handle Derek's change, please?  I'll leave it
up to you to decide if it's best to wait for 8u141.

Andrew.