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powerpc/radix: Update MMU cache

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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 <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-04-29 23:26:22 +10:00 committed by Michael Ellerman
parent d6a9996e84
commit a3dece6d69
1 changed files with 2 additions and 0 deletions
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arch/powerpc/mm/mem.c
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@ -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 * called with either mm->page_table_lock held or ptl lock held
*/ */
unsigned long access = 0, trap; unsigned long access = 0, trap;
if (radix_enabled())
return;
/* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */ /* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */
if (!pte_young(*ptep) || address >= TASK_SIZE) if (!pte_young(*ptep) || address >= TASK_SIZE)