powerpc/powernv/npu: Use flush_all_mm() instead of flush_tlb_mm()

With the optimisations introduced by commit a46cc7a908 ("powerpc/mm/radix:
Improve TLB/PWC flushes"), flush_tlb_mm() no longer flushes the page walk
cache with radix. Switch to using flush_all_mm() to ensure the pwc and tlb
are properly flushed on the nmmu.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c
index 2cb6cbe..2fff9a6 100644 (file)
--- a/arch/powerpc/platforms/powernv/npu-dma.c
+++ b/arch/powerpc/platforms/powernv/npu-dma.c
@@ -549,7 +549,7 @@ static void mmio_invalidate(struct npu_context *npu_context, int va,
         * Unfortunately the nest mmu does not support flushing specific
         * addresses so we have to flush the whole mm.
         */
-       flush_tlb_mm(npu_context->mm);
+       flush_all_mm(npu_context->mm);
 
        /*
         * Loop over all the NPUs this process is active on and launch