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authorLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-05-19 15:09:05 +1000
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-05-19 15:09:05 +1000
commitc203e45f069af47ca7623e4dcd8c00bfba2722e4 (patch)
tree4563115b6565dcfd97015c1c9366fb3d07cabf19 /arch/ia64/mm/init.c
parenta94477da38e0b261a7ecea71f4c95a3bcd5be69c (diff)
parentb8291ad07a7f3b5b990900f0001198ac23ba893e (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus
Diffstat (limited to 'arch/ia64/mm/init.c')
-rw-r--r--arch/ia64/mm/init.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index fc6c6636ffda..200100ea7610 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -719,3 +719,28 @@ out:
EXPORT_SYMBOL_GPL(remove_memory);
#endif /* CONFIG_MEMORY_HOTREMOVE */
#endif
+
+/*
+ * Even when CONFIG_IA32_SUPPORT is not enabled it is
+ * useful to have the Linux/x86 domain registered to
+ * avoid an attempted module load when emulators call
+ * personality(PER_LINUX32). This saves several milliseconds
+ * on each such call.
+ */
+static struct exec_domain ia32_exec_domain;
+
+static int __init
+per_linux32_init(void)
+{
+ ia32_exec_domain.name = "Linux/x86";
+ ia32_exec_domain.handler = NULL;
+ ia32_exec_domain.pers_low = PER_LINUX32;
+ ia32_exec_domain.pers_high = PER_LINUX32;
+ ia32_exec_domain.signal_map = default_exec_domain.signal_map;
+ ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
+ register_exec_domain(&ia32_exec_domain);
+
+ return 0;
+}
+
+__initcall(per_linux32_init);