1 files changed, 3 insertions, 0 deletions
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 43301a5360..be541cb189 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1216,6 +1216,9 @@ void __init __start_xen(unsigned long mbi_p)
     /* Low mappings were only needed for some BIOS table parsing. */
     zap_low_mappings();
 
+    mmio_ro_ranges = rangeset_new(NULL, "r/o mmio ranges",
+                                  RANGESETF_prettyprint_hex);
+
     init_apic_mappings();
 
     normalise_cpu_order();