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diff --git a/kitten/include/arch-x86_64/cache.h b/kitten/include/arch-x86_64/cache.h
new file mode 100644
index 0000000..2ad1879
--- /dev/null
+++ b/kitten/include/arch-x86_64/cache.h
@@ -0,0 +1,17 @@
+/*
+ * include/arch-x86_64/cache.h
+ */
+#ifndef _ARCH_CACHE_H
+#define _ARCH_CACHE_H
+
+/* L1 cache line size */
+#define L1_CACHE_SHIFT		(CONFIG_X86_L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+
+/* Inter-node cache line size for NUMA systems */
+#define INTERNODE_CACHE_SHIFT	(CONFIG_X86_INTERNODE_CACHE_SHIFT)
+#define INTERNODE_CACHE_BYTES	(1 << INTERNODE_CACHE_SHIFT)
+
+#define __read_mostly __attribute__((__section__(".data.read_mostly")))
+
+#endif