RFR [XS]: 8215961: jdk/jfr/event/os/TestCPUInformation.java fails on AArch64

[Baesken, Matthias]

Hello, please review this small  fix .

At the moment,  the test    jdk/jfr/event/os/TestCPUInformation.java   fails on AArch64 with the following error :


java.lang.RuntimeException: Value not in (Intel, AMD, Unknown x86, SPARC, ARM, PPC, PowerPC, AArch64, zArch), field='description', value='0x50:0x0:0x000:1, simd'


Reason is that  the  jdk.CPUInformation   event misses  a known CPU identifier value  in the  description,  see the  description part of it  :

Event: jdk.CPUInformation {
   ....
  description = "0x50:0x0:0x000:1, simd"
  sockets = 8
  ....
}


The patch adds  the CPU identifier info to  the   _cpu_desc   string  where it is taken from   .
Please compare also with the ppc - implementation where the info  (PPC)   is already added .

vm_version_ext_ppc.cpp

50     snprintf(_cpu_desc, CPU_DETAILED_DESC_BUF_SIZE, "PPC %s", features_string());



Bug/webrev :

https://bugs.openjdk.java.net/browse/JDK-8215961

http://cr.openjdk.java.net/~mbaesken/webrevs/8215961.0/


Thanks, Matthias