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vfio: Collect container iova range info

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Collect iova range information if VFIO_IOMMU_TYPE1_INFO_CAP_IOVA_RANGE
capability is supported.

This allows to propagate the information though the IOMMU MR
set_iova_ranges() callback so that virtual IOMMUs
get aware of those aperture constraints. This is only done if
the info is available and the number of iova ranges is greater than
0.

A new vfio_get_info_iova_range helper is introduced matching
the coding style of existing vfio_get_info_dma_avail. The
boolean returned value isn't used though. Code is aligned
between both.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@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 15:45:09 +02:00 • committed by Cédric Le Goater
parent 51478a8ef5
commit e4a8ae09c5
3 changed files with 49 additions and 3 deletions
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9
hw/vfio/common.c
View file

@ -693,6 +693,15 @@ static void vfio_listener_region_add(MemoryListener *listener,
goto fail;
}
if (container->iova_ranges) {
ret = memory_region_iommu_set_iova_ranges(giommu->iommu_mr,
container->iova_ranges, &err);
if (ret) {
g_free(giommu);
goto fail;
}
}
ret = memory_region_register_iommu_notifier(section->mr, &giommu->n,
&err);
if (ret) {