diff --git a/repos/dde_linux/src/include/lx_emul/shadow/arch/arm64/include/asm/memory.h b/repos/dde_linux/src/include/lx_emul/shadow/arch/arm64/include/asm/memory.h
index f0d24e2d05..5d5aadde9a 100644
--- a/repos/dde_linux/src/include/lx_emul/shadow/arch/arm64/include/asm/memory.h
+++ b/repos/dde_linux/src/include/lx_emul/shadow/arch/arm64/include/asm/memory.h
@@ -18,6 +18,7 @@
 
 #include <asm/page-def.h>
 #include <linux/sizes.h>
+#include <linux/pfn.h>
 #include <lx_emul/debug.h>
 #include <lx_emul/alloc.h>
 #include <lx_emul/page_virt.h>
@@ -61,4 +62,16 @@ static inline struct page *virt_to_page(void const *v) { return lx_emul_virt_to_
 
 #endif /* __ASSEMBLY__ */
 
+/*
+ * Normally included from <asm-generic/memory_model.h> and
+ * implemented via PHYS_PFN()
+ */
+#define __phys_to_pfn(paddr) PHYS_PFN(paddr)
+
+/*
+ * Normally included from <asm-generic/memory_model.h> and
+ * implemented via PFN_PHYS()
+ */
+#define   __pfn_to_phys(pfn) PFN_PHYS(pfn)
+
 #endif /* __ASM_MEMORY_H */