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virtio-iommu: Implement set_iova_ranges() callback

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The implementation populates the array of per IOMMUDevice
host reserved ranges.

It is forbidden to have conflicting sets of host IOVA ranges
to be applied onto the same IOMMU MR (implied by different
host devices).

In case the callback is called after the probe request has
been issues by the driver, a warning is issued.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: "Michael S. Tsirkin" <mst@redhat.com>
Tested-by: Yanghang Liu <yanghliu@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Eric Auger 2023-10-19 15:45:16 +02:00 • committed by Cédric Le Goater
parent 09b4c3d6a2
commit 30d40e39bd
2 changed files with 68 additions and 0 deletions
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1
include/hw/virtio/virtio-iommu.h
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@ -40,6 +40,7 @@ typedef struct IOMMUDevice {
MemoryRegion root; /* The root container of the device */
MemoryRegion bypass_mr; /* The alias of shared memory MR */
GList *resv_regions;
GList *host_resv_ranges;
bool probe_done;
} IOMMUDevice;