UPDATE: it appears that there's no such thing as a cacheable DMA buffer on ARM if you do it the normal way.
更新：看样子，有作为ARM可缓存的DMA缓冲区没有这样的事情，如果你这样做的正常方式。
UPDATE: it appears that there's no such thing as a cacheable DMA buffer on ARM if you do it the normal way.
更新：看样子，有作为ARM可缓存的DMA缓冲区没有这样的事情，如果你这样做的正常方式。
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