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| author | Sam Bobroff <sbobroff@linux.ibm.com> | 2020-03-31 07:12:46 +0300 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2020-04-01 22:50:46 +0300 |
| commit | 00bc5095547ef9878324167fe0c3e56f7b388159 (patch) | |
| tree | c388045822aeb1be705d9b1a3ee3d2b92bed989a /drivers/iommu | |
| parent | 48219795e7dbd3d4850f5bf47fa3e37c9c2a561b (diff) | |
| download | linux-00bc5095547ef9878324167fe0c3e56f7b388159.tar.xz | |
vfio-pci/nvlink2: Allow fallback to ibm,mmio-atsd[0]
Older versions of skiboot only provide a single value in the device
tree property "ibm,mmio-atsd", even when multiple Address Translation
Shoot Down (ATSD) registers are present. This prevents NVLink2 devices
(other than the first) from being used with vfio-pci because vfio-pci
expects to be able to assign a dedicated ATSD register to each NVLink2
device.
However, ATSD registers can be shared among devices. This change
allows vfio-pci to fall back to sharing the register at index 0 if
necessary.
Fixes: 7f92891778df ("vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver")
Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/iommu')
0 files changed, 0 insertions, 0 deletions