-Xlog:gc+heap+coops=debug prints whether the memory reservation with large page(-XX:+UseLargePages) is succeeded or not. On Solaris that message is printed even succeeded with large page.

"Reserve regular memory without large pages" from ReservedHeapSpace::try_reserve_heap() or ReservedSpace::initialize() should not be printed if a reservation succeeded with large page.

Other OSes are fine.