We use the new extended IRQ VFIO_IRQ_TYPE_NESTED type and VFIO_IRQ_SUBTYPE_DMA_FAULT subtype to set/unset a notifier for physical DMA faults. The associated eventfd is triggered, in nested mode, whenever a fault is detected at IOMMU physical level. The actual handler will be implemented in subsequent patches. Signed-off-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
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