diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e5790fe..a8ce13a5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -114,6 +114,9 @@
 config ARCH_HAS_CPU_RELAX
 	def_bool y
 
+config ARCH_HAS_CACHE_LINE_SIZE
+	def_bool y
+
 config HAVE_SETUP_PER_CPU_AREA
 	def_bool X86_64 || (X86_SMP && !X86_VOYAGER)