[Bug 25428] New: Memory allocation issue when working with a PAE kernel

http://bugs.winehq.org/show_bug.cgi?id=25428

Summary: Memory allocation issue when working with a PAE kernel
           Product: Wine
           Version: 1.3.7
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=32366)
 --> (http://bugs.winehq.org/attachment.cgi?id=32366)
Memory allocation test program.

It seems that when using wine with A PAE kernel on a system with enough memory
to put PAE into effect (e.g. 5GB), the maximum limit of memory that an
application can allocate is about 1.5GB. Using the same kernels on the same
system but with 3GB, the limit is 2GB.

I have created a small test that allocates memory with a step of 64MB with a
maximum total allocated space of 2GB. Then I compiled it both with winegcc and
gcc.

On the 3GB RAM setup, I could reach the MAX value, both with the winegcc and
the gcc compiled executable

On the 5GB RAM setup, the winegcc version stopped at ~1.5, while the gcc
version reached the MAX value.

Kernels tested:
2.6.31.12-rt21-avlinux-realtime-pae-rev3
2.6.36-liquorix-avlinux-pae

Wine versions tested:
1.3.5, 1.3.7

Known applications affected by this issue:
NI Kontakt 4