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| author | Arvind Sankar <nivedita@alum.mit.edu> | 2019-10-08 16:33:57 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-10-18 17:19:20 +0200 |
| commit | 9c24eaf81cc44d4bb38081c99eafd72ed85cf7f3 (patch) | |
| tree | c7308459daee66e24068e6b1bd9e685553e36dd9 /drivers/interconnect/qcom | |
| parent | Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm6... (diff) | |
| download | linux-9c24eaf81cc44d4bb38081c99eafd72ed85cf7f3.tar.xz linux-9c24eaf81cc44d4bb38081c99eafd72ed85cf7f3.zip | |
iommu/vt-d: Return the correct dma mask when we are bypassing the IOMMU
We must return a mask covering the full physical RAM when bypassing the
IOMMU mapping. Also, in iommu_need_mapping, we need to check using
dma_direct_get_required_mask to ensure that the device's dma_mask can
cover physical RAM before deciding to bypass IOMMU mapping.
Based on an earlier patch from Christoph Hellwig.
Fixes: 249baa547901 ("dma-mapping: provide a better default ->get_required_mask")
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/interconnect/qcom')
0 files changed, 0 insertions, 0 deletions