1 files changed, 5 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index dd6c7a3bf72c..461c91625a80 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -420,6 +420,9 @@ int pcibios_unmap_io_space(struct pci_bus *bus)
          * so flushing the hash table is the only sane way to make sure
          * that no hash entries are covering that removed bridge area
          * while still allowing other busses overlapping those pages
+         *
+         * Note: If we ever support P2P hotplug on Book3E, we'll have
+         * to do an appropriate TLB flush here too
          */
         if (bus->self) {
                 struct resource *res = bus->resource[0];
@@ -427,8 +430,10 @@ int pcibios_unmap_io_space(struct pci_bus *bus)
                 pr_debug("IO unmapping for PCI-PCI bridge %s\n",
                          pci_name(bus->self));
 
+#ifdef CONFIG_PPC_STD_MMU_64
                 __flush_hash_table_range(&init_mm, res->start + _IO_BASE,
                                          res->end + _IO_BASE + 1);
+#endif
                 return 0;
         }