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| author | Jason Gunthorpe <[email protected]> | 2025-02-20 01:31:41 +0000 |
|---|---|---|
| committer | Jason Gunthorpe <[email protected]> | 2025-02-27 19:29:35 +0000 |
| commit | 40f5175d0eb77f902ba8e2a5df2a8f3a218c8843 (patch) | |
| tree | 2d7386d385c3f5c4ad40fd75527ea1acced1639c /tools/testing/selftests/net/lib/py/utils.py | |
| parent | iommu: Turn fault_data to iommufd private pointer (diff) | |
| download | kernel-40f5175d0eb77f902ba8e2a5df2a8f3a218c8843.tar.gz kernel-40f5175d0eb77f902ba8e2a5df2a8f3a218c8843.zip | |
iommufd: Implement sw_msi support natively
iommufd has a model where the iommu_domain can be changed while the VFIO
device is attached. In this case, the MSI should continue to work. This
corner case has not worked because the dma-iommu implementation of sw_msi
is tied to a single domain.
Implement the sw_msi mapping directly and use a global per-fd table to
associate assigned IOVA to the MSI pages. This allows the MSI pages to
be loaded into a domain before it is attached ensuring that MSI is not
disrupted.
Link: https://patch.msgid.link/r/e13d23eeacd67c0a692fc468c85b483f4dd51c57.1740014950.git.nicolinc@nvidia.com
Signed-off-by: Nicolin Chen <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
Diffstat (limited to 'tools/testing/selftests/net/lib/py/utils.py')
0 files changed, 0 insertions, 0 deletions