RFR: 8367780: Enable UseAPX on Intel CPUs only when both APX_F and APX_NCI_NDD_NF cpuid features are present [v4]

Thu Sep 25 00:48:37 UTC 2025

On Tue, 23 Sep 2025 10:37:53 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

> EMR>sde64 -dmr -ptr_raise -- java -XX:+PrintFlagsFinal -XX:+UnlockExperimentalVMOptions -XX:+UseAPX --version | grep APX
> OpenJDK 64-Bit Server VM warning: UseAPX is not supported on this CPU, setting it to false
> 

Hi Jatin,

Thank for informing about this issue!
Sorry about the SDE issue. Will inform you once the public version of SDE which supports this feature is avalible.

Thanks,
Vamsi

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PR Comment: https://git.openjdk.org/jdk/pull/27320#issuecomment-3331286352