Mercurial > hg > truffle
view src/os_cpu/linux_sparc/vm/linux_sparc.s @ 12110:4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso
author | stefank |
---|---|
date | Fri, 16 Aug 2013 13:22:32 +0200 |
parents | 980532a806a5 |
children | de6a9e811145 |
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# # Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved. # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. # # This code is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License version 2 only, as # published by the Free Software Foundation. # # This code is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License # version 2 for more details (a copy is included in the LICENSE file that # accompanied this code). # # You should have received a copy of the GNU General Public License version # 2 along with this work; if not, write to the Free Software Foundation, # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. # # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA # or visit www.oracle.com if you need additional information or have any # questions. # # Possibilities: # -- membar # -- CAS (SP + BIAS, G0, G0) # -- wr %g0, %asi .globl SpinPause .type SpinPause,@function .align 32 SpinPause: retl mov %g0, %o0 .globl _Copy_conjoint_jlongs_atomic .type _Copy_conjoint_jlongs_atomic,@function _Copy_conjoint_jlongs_atomic: cmp %o0, %o1 bleu 4f sll %o2, 3, %o4 ba 2f 1: subcc %o4, 8, %o4 std %o2, [%o1] add %o0, 8, %o0 add %o1, 8, %o1 2: bge,a 1b ldd [%o0], %o2 ba 5f nop 3: std %o2, [%o1+%o4] 4: subcc %o4, 8, %o4 bge,a 3b ldd [%o0+%o4], %o2 5: retl nop .globl _flush_reg_windows .align 32 _flush_reg_windows: ta 0x03 retl mov %fp, %o0