Execution problems with Atomic Operations on OpenJDK10 for ARM5 Soft Float

John Paul Adrian Glaubitz glaubitz at physik.fu-berlin.de
Wed Apr 4 15:06:02 UTC 2018


CC'ing hotspot-dev

On 04/04/2018 12:29 PM, bren at juanantonio.info wrote:
> I think that in OpenJDK10 changed something in compare to OpenJDK9 in relation to ARM5 support.

It was OpenJDK9 which dropped support for ARM CPUs prior ARMv7. If you are
using ARMv5, you have to resort to OpenJDK Zero, i.e. the unoptimized, generic
implementation of the JVM.

As for the atomic operation, I'm not sure whether Zero supports this particular
atomic operation. I will have to dig into the code myself.

Would it be possible that you provide sample code that helps reproduce the problem?

Adrian

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