RFR [XS]: 8239000: handle ContendedPaddingWidth in vm_version_ppc

[Baesken, Matthias]

Hi Lutz,  


> 
> Hi Matthias,
> 
> your change looks good to me. Please note: I'm not a reviewer!
> 
> I have one question, though. Is there a reason why you only make ppc "look
> like the other architectures"? aarch64 is missing that code as well.
> 

The cache line size situation seems to be a little bit complicated on different aarch  HW, see for instance the discussion here :

https://github.com/littlekernel/lk/issues/172

So I just changed ppc  for now .

Best regards, Matthias



> Thanks for considering!
> Lutz
> 
> On 13.02.20, 12:18, "hotspot-dev on behalf of Baesken, Matthias" <hotspot-
> dev-bounces at openjdk.java.net on behalf of matthias.baesken at sap.com>
> wrote:
> 
>     Hello, please review this small adjustment to vm_version_ppc .
> 
>     The ContendedPaddingWidth parameter should be handled in
> vm_version_ppc like it is done on other architectures (x86/s390).  See
> vm_version_sparc/s390/x86 .cpp  for comparision.
> 
> 
>     Bug/webrev :
> 
>     https://bugs.openjdk.java.net/browse/JDK-8239000
> 
>     http://cr.openjdk.java.net/~mbaesken/webrevs/8239000.0/
> 
> 
>     Best regards, Matthias
>