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    SubjectRE: [PATCH 10/18] ioat3: xor support
    Williams, Dan J wrote:
    > ioat3.2 adds xor offload support for up to 8 sources. It can also
    > perform an xor-zero-sum operation to validate whether all given sources
    > sum to zero, without writing to a destination. Xor descriptors differ
    > from memcpy in that one operation may require multiple descriptors
    > depending on the number of sources. When the number of sources exceeds
    > 5 an extended descriptor is needed. These descriptors need to be
    > accounted for when updating the DMA_COUNT register.
    > Signed-off-by: Dan Williams <>
    > ---

    Signed-off-by: Maciej Sosnowski <>

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