| commit | c6e7958eb76ed267f7254b97f89773874df50e48 | |
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | |
| Wed, 13 Dec 2017 17:19:33 +0000 (13 10:19 -0700) | ||
| committer | Alex Williamson <alex.williamson@redhat.com> | |
| Wed, 13 Dec 2017 17:19:33 +0000 (13 10:19 -0700) | ||
| tree | a78734e22b18cf42d25e0c9cb6cd7476a1d77a9c | treesnapshot (tar.gz zip) |
| parent | f7f9c7b23243fef21296d04d03df1477d12c5c19 | commitdiff |
vfio/spapr: Allow fallback to SPAPR TCE IOMMU v1
The vfio_iommu_spapr_tce driver advertises kernel's support for
v1 and v2 IOMMU support, however it is not always possible to use
the requested IOMMU type. For example, a pseries host platform does not
support dynamic DMA windows so v2 cannot initialize and QEMU fails to
start.
This adds a fallback to the v1 IOMMU if v2 cannot be used.
Fixes: 318f67ce1371 ("vfio: spapr: Add DMA memory preregistering (SPAPR IOMMU v2)")
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
The vfio_iommu_spapr_tce driver advertises kernel's support for
v1 and v2 IOMMU support, however it is not always possible to use
the requested IOMMU type. For example, a pseries host platform does not
support dynamic DMA windows so v2 cannot initialize and QEMU fails to
start.
This adds a fallback to the v1 IOMMU if v2 cannot be used.
Fixes: 318f67ce1371 ("vfio: spapr: Add DMA memory preregistering (SPAPR IOMMU v2)")
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
| hw/vfio/common.c | diffblobblamehistory |