diff options
Diffstat (limited to 'drivers/iommu/arm-smmu-v3.c')
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 8ff8f61d9e1c..2734beb709e0 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -191,7 +191,13 @@ #define Q_BASE_RWA (1UL << 62) #define Q_BASE_ADDR_MASK GENMASK_ULL(51, 5) #define Q_BASE_LOG2SIZE GENMASK(4, 0) + +/* Ensure DMA allocations are naturally aligned */ +#ifdef CONFIG_CMA_ALIGNMENT #define Q_MAX_SZ_SHIFT (PAGE_SHIFT + CONFIG_CMA_ALIGNMENT) +#else +#define Q_MAX_SZ_SHIFT (PAGE_SHIFT + MAX_ORDER - 1) +#endif /* * Stream table. |