[PATCH] ARM SMP: Mark device mappings as "device" in ARMv6 parlance

ARMv6 introduces memory types into the page tables.  Mark devices
mappings with the "shared device" memory type.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c
index b19f00e99a21..e33fe4229d05 100644
--- a/arch/arm/mm/mm-armv.c
+++ b/arch/arm/mm/mm-armv.c
@@ -425,6 +425,9 @@ static void __init build_mem_type_table(void)
                 mem_types[MT_ROM].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
                 mem_types[MT_MINICLEAN].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
                 mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
+
+                mem_types[MT_DEVICE].prot_pte |= L_PTE_BUFFERABLE;
+                mem_types[MT_DEVICE].prot_sect |= PMD_SECT_BUFFERED;
         }
 
         cp = &cache_policies[cachepolicy];