powerpc: Shield code specific to 64-bit server processors

[deliverable/linux.git] / arch / powerpc / kernel / pci_64.c

diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index dd6c7a3bf72cb465baf673a5a0a373d8b1829d15..461c91625a80674f50b5615cea8809b602a37543 100644 (file)
--- 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;
        }