Messages in this thread | | | From | "Sosnowski, Maciej" <> | Date | Tue, 15 Sep 2009 17:08:48 +0100 | Subject | RE: [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 <dan.j.williams@intel.com> > ---
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
| |