tree 30502e3c3f73000b2e49124cbd2da86d429036d8
parent 23d2b95b1d1c92898336a4ebf5c0281f79fb7581
author Qiming Shi <qiming.shi@intel.com> 1398325121 +0800
committer Andreas Gampe <agampe@google.com> 1400121489 -0700

ART: Resolve MAP_32BIT limitation in x86_64

Add checks that ensure when low4gb is set and an expected pointer
is given the requested memory fits into 4GB.

On x86_64, only use MAP_32BIT when there is no expected pointer.
This avoids a limitation in mmap (only 2GB visible).

Add tests to check behavior.

Original Author: Qiming Shi <qiming.shi@intel.com>
Change-Id: Ia2e3e0a46764ef70126b0c264f1fae681622d3cb