A 'dma_wmb' barrier is enough to guarantee previous writes before accessing by acc device in the outer shareable domain. A 'smp_wmb' barrier is enough to guarantee previous writes before accessing by other cpus in the inner shareble domain. Signed-off-by: Hui Tang <tanghui20@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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sgl.c |