Commit 2a31ad09 authored Sep 06, 2017 by Alistair Popple Committed by Michael Ellerman Nov 13, 2017

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>

parent 8d4e10e9

arch/powerpc/platforms/powernv/npu-dma.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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