iommu/virtio: Add probe request

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When the device offers the probe feature, send a probe request for each
device managed by the IOMMU. Extract RESV_MEM information. When we
encounter a MSI doorbell region, set it up as a IOMMU_RESV_MSI region.
This will tell other subsystems that there is no need to map the MSI
doorbell in the virtio-iommu, because MSIs bypass it.

Tested-by: Bharat Bhushan <bharat.bhushan@nxp.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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Jean-Philippe Brucker 2019-01-15 12:19:58 +00:00 • committed by Michael S. Tsirkin

parent edcd69ab9a

commit 2a5a314874

2 changed files with 187 additions and 6 deletions

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include/uapi/linux/virtio_iommu.h

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