[PATCH v3 59/70] powerpc/radix: Update MMU cache
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2016-04-29 13:27:34
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
From: "Aneesh Kumar K.V" <redacted> With radix there is no MMU cache. Hence we don't need to do anything in update_mmu_cache(). Signed-off-by: Aneesh Kumar K.V <redacted> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- 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 ac79dbde1015..89677884ecc8 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