This patch extends the VT-d driver to support KVM
[Ben: fixed memory pinning]
[avi: move dma_remapping.h as well]
Signed-off-by: Kay, Allen M
Signed-off-by: Weidong Han
Signed-off-by: Ben-Ami Yassour
Signed-off-by: Amit Shah
Acked-by: Mark Gross
Signed-off-by: Avi Kivity