arm: mm: hugetlb WT hack

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 795957d..7a4e67f 100644 (file)
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -564,6 +564,12 @@ static void __init build_mem_type_table(void)
 
        arm_hugepmdprotval = mem_types[MT_MEMORY].prot_sect | PMD_SECT_AP_READ
                                | PMD_SECT_nG;
+
+       /* HACK: make huge pages WT
+        * XXX: mm will not know nothing about this..
+        * FIXME: should only do it on Cortex-A8 or below */
+       arm_hugepmdprotval &= ~(PMD_SECT_WB | PMD_SECT_TEX(1));
+       arm_hugepmdprotval |= PMD_SECT_WT;
 #endif
 
 }