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    SubjectRe: [PATCH] add new DMA_ADDR_T_SIZE define
    On Wed, 19 Feb 2003, David S. Miller wrote:

    > Yes true, storing the two consequetive 32-bit values is better
    > for store buffer compression of the cpu. Using memset is much
    > more inefficient because you push the full set of data once
    > then you push non-compressible stores to the same data through
    > the cpu.
    >
    > I'm not talking out of my ass, I've measured this.

    So is the current wisdom something like "always treat dma_addr_t as a u64
    and be happy"?

    Ion

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