Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
diff --git a/include/asm-ia64/mmu.h b/include/asm-ia64/mmu.h
new file mode 100644
index 0000000..ae15253
--- /dev/null
+++ b/include/asm-ia64/mmu.h
@@ -0,0 +1,11 @@
+#ifndef __MMU_H
+#define __MMU_H
+
+/*
+ * Type for a context number.  We declare it volatile to ensure proper ordering when it's
+ * accessed outside of spinlock'd critical sections (e.g., as done in activate_mm() and
+ * init_new_context()).
+ */
+typedef volatile unsigned long mm_context_t;
+
+#endif