Subject: [PATCH V2 56/68] powerpc/radix: update mmu cache

From: "Aneesh Kumar K.V" <[email-masked]>
Date: Sat, 9 Apr 2016 11:43:52 +0530

With radix there is no mmu cache. Hence we don't need to do much
in update_mmu_cache.

Signed-off-by: Aneesh Kumar K.V <[email-masked]>
---
 arch/powerpc/mm/mem.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index f980da6d7569..3164ce720b3e 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -499,6 +499,8 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
 	 * called with either mm->page_table_lock held or ptl lock held
 	 */
 	unsigned long access = 0, trap;
+	if (radix_enabled())
+		return;
 
 	/* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */
 	if (!pte_young(*ptep) || address >= TASK_SIZE)
-- 
2.5.0