On 2023/8/3 8:08, Jason Gunthorpe wrote:
These drivers don't support IOMMU_DOMAIN_DMA, so this commit effectively
allows them to support that mode.
The prior work to require default_domains makes this safe because every
one of these drivers is either compilation incompatible with dma-iommu.c,
or already establishing a default_domain. In both cases alloc_domain()
will never be called with IOMMU_DOMAIN_DMA for these drivers so it is safe
to drop the test.
Removing these tests clarifies that the domain allocation path is only
about the functionality of a paging domain and has nothing to do with
policy of how the paging domain is used for UNMANAGED/DMA/DMA_FQ.
Tested-by: Niklas Schnelle<[email protected]>
Tested-by: Steven Price<[email protected]>
Tested-by: Marek Szyprowski<[email protected]>
Tested-by: Nicolin Chen<[email protected]>
Signed-off-by: Jason Gunthorpe<[email protected]>
---
drivers/iommu/msm_iommu.c | 7 ++-----
drivers/iommu/mtk_iommu_v1.c | 7 ++-----
drivers/iommu/omap-iommu.c | 7 ++-----
drivers/iommu/s390-iommu.c | 7 ++-----
4 files changed, 8 insertions(+), 20 deletions(-)
Reviewed-by: Lu Baolu <[email protected]>
Best regards,
baolu
