RFR(M): 8156923: [ppc] Implement "JEP 270: Reserved Stack Areas for Critical Sections".

[Lindenmaier, Goetz]

Hi, 

Could someone please have a look at this change?

Thanks,
  Goetz.

> -----Original Message-----
> From: Lindenmaier, Goetz
> Sent: Mittwoch, 18. Mai 2016 11:39
> To: hotspot-runtime-dev at openjdk.java.net
> Subject: RFR(M): 8156923: [ppc] Implement "JEP 270: Reserved Stack Areas
> for Critical Sections".
> 
> Hi,
> 
> This change ports JEP 270 to ppc.
> 
> It adapts the corresponding test to run also on ppc. Further I enabled test
> cases
> for the interpreter and dedicated C1/C2, which helped me to find some initial
> problems.
> The change does not affect the behavior of any other platform.
> 
> Please review this change. I please need a sponsor.
> http://cr.openjdk.java.net/~goetz/wr16/8156923-resStack/webrev.01/
> 
> Best regards,
>   Goetz.