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-rw-r--r--nptl/sysdeps/x86_64/Makefile9
1 files changed, 8 insertions, 1 deletions
diff --git a/nptl/sysdeps/x86_64/Makefile b/nptl/sysdeps/x86_64/Makefile
index 24990a2b7e..6e24a26cde 100644
--- a/nptl/sysdeps/x86_64/Makefile
+++ b/nptl/sysdeps/x86_64/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@@ -19,3 +19,10 @@
ifeq ($(subdir),csu)
gen-as-const-headers += tcb-offsets.sym
endif
+
+ifeq ($(subdir),nptl)
+# P4s have problems with 4M aliasing. We disturb the allocation of stacks
+# just enough so the subsequent allocations do not use stack address
+# (mod 4M) == 0.
+CFLAGS-pthread_create.c += -DMULTI_PAGE_ALIASING=65536
+endif