From: Andy King <redacted>
Date: Tue, 20 Aug 2013 10:33:32 -0700

We can't just do virt_to_phys() on memory that we pass to the device and
expect it to work in presence of a virtual IOMMU.  We need to add IOMMU
mappings for such DMAs to work correctly.  Fix that with
pci_alloc_consistent() where possible, or pci_map_single() where the
mapping is short-lived or we don't control the allocation (netdev).

Also fix two small bugs:
1) use after free of rq->buf_info in vmxnet3_rq_destroy()
2) a cpu_to_le32() that should have been a cpu_to_le64()

Acked-by: George Zhang <redacted>
Acked-by: Aditya Sarwade <redacted>
Signed-off-by: Andy King <redacted>

Please use dma_alloc_coherent() (or in fact dma_zalloc_coherent()),
dma_map_single() et al., because they are preferred and in particular
allow specification of GFP_* flags.