1 files changed, 10 insertions, 5 deletions

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 32f416175db1..a83dfa3cf40c 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -351,9 +351,14 @@ static void __init htab_init_page_sizes(void)
                 mmu_vmalloc_psize = MMU_PAGE_64K;
                 if (mmu_linear_psize == MMU_PAGE_4K)
                         mmu_linear_psize = MMU_PAGE_64K;
-                if (cpu_has_feature(CPU_FTR_CI_LARGE_PAGE))
-                        mmu_io_psize = MMU_PAGE_64K;
-                else
+                if (cpu_has_feature(CPU_FTR_CI_LARGE_PAGE)) {
+                        /*
+                         * Don't use 64k pages for ioremap on pSeries, since
+                         * that would stop us accessing the HEA ethernet.
+                         */
+                        if (!machine_is(pseries))
+                                mmu_io_psize = MMU_PAGE_64K;
+                } else
                         mmu_ci_restrictions = 1;
         }
 #endif /* CONFIG_PPC_64K_PAGES */
@@ -506,10 +511,10 @@ void __init htab_initialize(void)
         } else {
                 /* Find storage for the HPT.  Must be contiguous in
                  * the absolute address space. On cell we want it to be
-                 * in the first 1 Gig.
+                 * in the first 2 Gig so we can use it for IOMMU hacks.
                  */
                 if (machine_is(cell))
-                        limit = 0x40000000;
+                        limit = 0x80000000;
                 else
                         limit = 0;