--- a/hotspot/src/share/vm/runtime/virtualspace.cpp Thu Jan 15 16:05:20 2015 +0100
+++ b/hotspot/src/share/vm/runtime/virtualspace.cpp Fri Jan 16 10:29:12 2015 +0100
@@ -38,7 +38,8 @@
}
ReservedSpace::ReservedSpace(size_t size) {
- size_t page_size = os::page_size_for_region(size, 1);
+ // Want to use large pages where possible and pad with small pages.
+ size_t page_size = os::page_size_for_region_unaligned(size, 1);
bool large_pages = page_size != (size_t)os::vm_page_size();
// Don't force the alignment to be large page aligned,
// since that will waste memory.
@@ -617,7 +618,7 @@
bool VirtualSpace::initialize(ReservedSpace rs, size_t committed_size) {
- const size_t max_commit_granularity = os::page_size_for_region(rs.size(), 1);
+ const size_t max_commit_granularity = os::page_size_for_region_unaligned(rs.size(), 1);
return initialize_with_granularity(rs, committed_size, max_commit_granularity);
}
@@ -1239,7 +1240,7 @@
case Disable:
return vs.initialize_with_granularity(rs, 0, os::vm_page_size());
case Commit:
- return vs.initialize_with_granularity(rs, 0, os::page_size_for_region(rs.size(), 1));
+ return vs.initialize_with_granularity(rs, 0, os::page_size_for_region_unaligned(rs.size(), 1));
}
}