[8u] RFR: 8191955: AArch64: incorrect prefetch distance causes an internal error

[Hohensee, Paul]

Lgtm.

Thanks,
Paul

-----Original Message-----
From: jdk8u-dev <jdk8u-dev-retn at openjdk.java.net> on behalf of Guo Ge <ge.guo at huawei.com>
Date: Tuesday, March 9, 2021 at 12:19 AM
To: "jdk8u-dev at openjdk.java.net" <jdk8u-dev at openjdk.java.net>
Subject: [8u] RFR: 8191955: AArch64: incorrect prefetch distance causes an internal error

Hi,

I would like to request a review for backport of JDK-8191955.

Original bug: https://bugs.openjdk.java.net/browse/JDK-8191955
webrev for 8u: http://cr.openjdk.java.net/~gguo/8191955-8u/webrev.00/

The original fix is not clean due to context change, `java
-XX:AllocatePrefetchDistance=196 -jar SPECjvm2008.jar -coe -ikv -wt 5s
-it 10s scimark.sparse.large` will throw a crash without the patch and
pass with it.

Thanks,
Guo Ge