RFR(XS): 8224573: Fix windows build after JDK-8221507

[Langer, Christoph]

OK, thanks guys. Will push after my builds are done.

> -----Original Message-----
> From: Aleksey Shipilev <shade at redhat.com>
> Sent: Mittwoch, 22. Mai 2019 09:03
> To: Thomas Stüfe <thomas.stuefe at gmail.com>; Langer, Christoph
> <christoph.langer at sap.com>
> Cc: hotspot-jfr-dev at openjdk.java.net; Ken Dobson
> <kdobson at redhat.com>; hotspot-dev at openjdk.java.net
> Subject: Re: RFR(XS): 8224573: Fix windows build after JDK-8221507
> 
> On 5/22/19 8:59 AM, Thomas Stüfe wrote:
> > 32bit should be enough for number of regions I think. If I am not mistaken,
> > they have a min region size of 256K, so this covers a heap of ~1000 tb?
> 
> Yes, u4 should be enough. That would require some light metadata
> refactoring and testing, so I am
> fine with doing that in a separate follow-up fix.
> 
> -Aleksey