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-rw-r--r--arch/i386/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index d86c865a7cd..0afec8566e7 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -442,6 +442,7 @@ config HIGHMEM4G
config HIGHMEM64G
bool "64GB"
+ depends on X86_CMPXCHG64
help
Select this if you have a 32-bit processor and more than 4
gigabytes of physical RAM.