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| author | Robin Murphy <robin.murphy@arm.com> | 2018-09-12 16:24:13 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-09-25 10:23:16 +0200 |
| commit | 43c5bf11a610ceeae68b26c24e0c76852d0d5cfc (patch) | |
| tree | 961a7e537c255524ecd83733f8c0364bc8b8a3f4 /arch/arm64/mm/dma-mapping.c | |
| parent | 6af588fed39178c8e118fcf9cb6664e58a1fbe88 (diff) | |
| download | linux-43c5bf11a610ceeae68b26c24e0c76852d0d5cfc.tar.bz2 | |
iommu/dma: Use fast DMA domain lookup
Most parts of iommu-dma already assume they are operating on a default
domain set up by iommu_dma_init_domain(), and can be converted straight
over to avoid the refcounting bottleneck. MSI page mappings may be in
an unmanaged domain with an explicit MSI-only cookie, so retain the
non-specific lookup, but that's OK since they're far from a contended
fast path either way.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'arch/arm64/mm/dma-mapping.c')
0 files changed, 0 insertions, 0 deletions