1 files changed, 5 insertions, 0 deletions

diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 7a5350d08cef..563049c483a1 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -594,6 +594,11 @@ char *__init pcibios_setup(char *str)
         } else if (!strcmp(str, "nocrs")) {
                 pci_probe |= PCI_ROOT_NO_CRS;
                 return NULL;
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+        } else if (!strcmp(str, "big_root_window")) {
+                pci_probe |= PCI_BIG_ROOT_WINDOW;
+                return NULL;
+#endif
         } else if (!strcmp(str, "earlydump")) {
                 pci_early_dump_regs = 1;
                 return NULL;