Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / ABI / removed / net_dma

diff --git a/kernel/Documentation/ABI/removed/net_dma b/kernel/Documentation/ABI/removed/net_dma
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+What:          tcp_dma_copybreak sysctl
+Date:          Removed in kernel v3.13
+Contact:       Dan Williams <dan.j.williams@intel.com>
+Description:
+       Formerly the lower limit, in bytes, of the size of socket reads
+       that will be offloaded to a DMA copy engine.  Removed due to
+       coherency issues of the cpu potentially touching the buffers
+       while dma is in flight.