Mercurial > hg > truffle
diff src/share/vm/runtime/virtualspace.cpp @ 325:93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
Summary: Turn off c2 implicit null checking on windows and large pages specified.
Reviewed-by: jrose, xlu
author | coleenp |
---|---|
date | Tue, 02 Sep 2008 15:18:26 -0400 |
parents | 1fdb98a17101 |
children | 9ee9cf798b59 032ddb9432ad |
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--- a/src/share/vm/runtime/virtualspace.cpp Sun Aug 31 15:24:54 2008 -0700 +++ b/src/share/vm/runtime/virtualspace.cpp Tue Sep 02 15:18:26 2008 -0400 @@ -380,7 +380,8 @@ bool large, char* requested_address) : ReservedSpace(size, alignment, large, requested_address, - UseCompressedOops ? lcm(os::vm_page_size(), alignment) : 0) { + UseCompressedOops && UseImplicitNullCheckForNarrowOop ? + lcm(os::vm_page_size(), alignment) : 0) { // Only reserved space for the java heap should have a noaccess_prefix // if using compressed oops. protect_noaccess_prefix(size); @@ -391,7 +392,8 @@ const size_t suffix_size, const size_t suffix_align) : ReservedSpace(prefix_size, prefix_align, suffix_size, suffix_align, - UseCompressedOops ? lcm(os::vm_page_size(), prefix_align) : 0) { + UseCompressedOops && UseImplicitNullCheckForNarrowOop ? + lcm(os::vm_page_size(), prefix_align) : 0) { protect_noaccess_prefix(prefix_size+suffix_size); }