SegmentedCodeCache fails when using large pages

When large pages are enabled, the VM tries to use at least one page for all code cache segments which fails if there is not enough space:

$ java -XX:+UseLargePages -XX:+SegmentedCodeCache -XX:InitialCodeCacheSize=2g -XX:ReservedCodeCacheSize=2g -XX:LargePageSizeInBytes=1g -Xlog:pagesize*=debug -version
[0.000s][debug][pagesize] Large Page sizes: 2M, 1G
[0.000s][info ][pagesize] Overriding default large page size (2M) using LargePageSizeInBytes: 1G
[0.001s][info ][pagesize] Usable page sizes: 4k, 2M, 1G
[0.003s][debug][pagesize] Commit special mapping: 0x00007fefc0000000, size=2G, page size=1G
[0.003s][info ][pagesize] CodeHeap 'non-nmethods': min=1G max=6M base=0x00007fefffc00000 page_size=1G size=6M
Error occurred during initialization of VM
Could not reserve enough space in CodeHeap 'non-nmethods' (6144K)

We should not exit them VM but fall back to a smaller page size for the failing segment.

Thanks to Scott Oaks for reporting.