diff options
| author | Robin Murphy <[email protected]> | 2021-06-03 14:48:21 +0100 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2021-06-07 14:51:33 +0200 |
| commit | be227f8e99a663d097536e9f9bc935fb26bdbc41 (patch) | |
| tree | efafb4d50290c44175b8b21e9391c0bc426b755e /lib/mpi/mpi-sub-ui.c | |
| parent | 8124c8a6b35386f73523d27eacb71b5364a68c4c (diff) | |
iommu/amd: Tidy up DMA ops init
Now that DMA ops are part of the core API via iommu-dma, fold the
vestigial remains of the IOMMU_DMA_OPS init state into the IOMMU API
phase, and clean up a few other leftovers. This should also close the
race window wherein bus_set_iommu() effectively makes the DMA ops state
visible before its nominal initialisation - it seems this was previously
fairly benign, but since commit a250c23f15c2 ("iommu: remove
DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE") it can now lead to the strict flush
queue policy inadvertently being picked for default domains allocated
during that window, with a corresponding unexpected perfomance impact.
Reported-by: Jussi Maki <[email protected]>
Tested-by: Jussi Maki <[email protected]>
Signed-off-by: Robin Murphy <[email protected]>
Fixes: a250c23f15c2 ("iommu: remove DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE")
Link: https://lore.kernel.org/r/665db61e23ff8d54ac5eb391bef520b3a803fcb9.1622727974.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-sub-ui.c')
0 files changed, 0 insertions, 0 deletions