Nicholas Piggin <npig...@gmail.com> writes:
Reviewed-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
> Signed-off-by: Nicholas Piggin <npig...@gmail.com>
> ---
> arch/powerpc/mm/tlb-radix.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c
> index 3a07d7a5e2fe..892544ebc2d2 100644
> --- a/arch/powerpc/mm/tlb-radix.c
> +++ b/arch/powerpc/mm/tlb-radix.c
> @@ -358,7 +358,7 @@ void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm,
> unsigned long addr)
> unsigned long ap = mmu_get_ap(mmu_virtual_psize);
> unsigned long pid, end;
>
> -
> + preempt_disable();
> pid = mm->context.id;
> if (unlikely(pid == MMU_NO_CONTEXT))
> goto no_context;
> @@ -366,6 +366,7 @@ void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm,
> unsigned long addr)
> /* 4k page size, just blow the world */
> if (PAGE_SIZE == 0x1000) {
> radix__flush_all_mm(mm);
> + preempt_enable();
> return;
> }
>
> --
> 2.13.3
