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vfio: simplify iommu group allocation for mediated devices

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Reuse the logic in vfio_noiommu_group_alloc to allocate a fake
single-device iommu group for mediated devices by factoring out a common
function, and replacing the noiommu boolean field in struct vfio_group
with an enum to distinguish the three different kinds of groups.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20210924155705.4258-8-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Christoph Hellwig
2021-09-24 17:56:57 +02:00
committed by Alex Williamson
parent c04ac34078
commit c68ea0d00a
8 changed files with 76 additions and 72 deletions
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2
samples/vfio-mdev/mbochs.c
View File

@@ -553,7 +553,7 @@ static int mbochs_probe(struct mdev_device *mdev)
mbochs_create_config_space(mdev_state);
mbochs_reset(mdev_state);
ret = vfio_register_group_dev(&mdev_state->vdev);
ret = vfio_register_emulated_iommu_dev(&mdev_state->vdev);
if (ret)
goto err_mem;
dev_set_drvdata(&mdev->dev, mdev_state);

2
samples/vfio-mdev/mdpy.c
View File

@@ -258,7 +258,7 @@ static int mdpy_probe(struct mdev_device *mdev)
mdpy_count++;
ret = vfio_register_group_dev(&mdev_state->vdev);
ret = vfio_register_emulated_iommu_dev(&mdev_state->vdev);
if (ret)
goto err_mem;
dev_set_drvdata(&mdev->dev, mdev_state);

2
samples/vfio-mdev/mtty.c
View File

@@ -741,7 +741,7 @@ static int mtty_probe(struct mdev_device *mdev)
mtty_create_config_space(mdev_state);
ret = vfio_register_group_dev(&mdev_state->vdev);
ret = vfio_register_emulated_iommu_dev(&mdev_state->vdev);
if (ret)
goto err_vconfig;
dev_set_drvdata(&mdev->dev, mdev_state);