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baremetal
2012 Oct 12
13
Dom0 physical networking/swiotlb/something issue in 3.7-rc1
Hi Konrad,
The following patch causes fairly large packet loss when transmitting
from dom0 to the physical network, at least with my tg3 hardware, but I
assume it can impact anything which uses this interface.
I suspect that the issue is that the compound pages allocated in this
way are not backed by contiguous mfns and so things fall apart when the
driver tries to do DMA.
However I