> On 20 Jun 2016, at 16:50 PM, KarimAllah Ahmed <karah...@amazon.de> wrote:
> 
> When a PCI device lives behind an IOMMU, it should use 'pci_dma_*' family of
> functions when any transfer from/to guest memory is required while
> 'cpu_physical_memory_*' family of functions completely bypass any MMU/IOMMU in
> the system.
> 
> vmxnet3 in some places was using 'cpu_physical_memory_*' family of functions
> which works fine with the default QEMU setup where IOMMU is not enabled but
> fails miserably when IOMMU is enabled. This commit converts all such instances
> in favor of 'pci_dma_*’

Acked-by: Dmitry Fleytman <dmi...@daynix.com <mailto:dmi...@daynix.com>>

> 
> Cc: Dmitry Fleytman <dmi...@daynix.com>
> Cc: Jason Wang <jasow...@redhat.com>
> Cc: qemu-devel@nongnu.org
> Cc: Anthony Liguori <aligu...@amazon.com>
> Signed-off-by: KarimAllah Ahmed <karah...@amazon.de>
> 
> —

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