hg: jdk8u/jdk8u-dev/hotspot: 8231949: [PPC64, s390]: Make async profiling more reliable

[shade at redhat.com]

Changeset: 7ab0ec535776
Author:    mdoerr
Date:      2019-10-24 16:28 +0200
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/7ab0ec535776

8231949: [PPC64, s390]: Make async profiling more reliable
Summary: Better checks if method from interpreter frame is valid.
Reviewed-by: rrich, ghaug, goetz

! src/os_cpu/linux_ppc/vm/thread_linux_ppc.cpp