write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/sparc/kernel/iommu-common.c
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@@ -166,13 +166,6 @@
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 		}
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 	}
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-	if (dev)
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-		boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
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-				      1 << iommu->table_shift);
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-	else
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-		boundary_size = ALIGN(1ULL << 32, 1 << iommu->table_shift);
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-
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-	boundary_size = boundary_size >> iommu->table_shift;
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 	/*
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 	 * if the skip_span_boundary_check had been set during init, we set
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 	 * things up so that iommu_is_span_boundary() merely checks if the
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@@ -181,6 +174,9 @@
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 	if ((iommu->flags & IOMMU_NO_SPAN_BOUND) != 0) {
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 		shift = 0;
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 		boundary_size = iommu->poolsize * iommu->nr_pools;
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+	} else {
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+		boundary_size = dma_get_seg_boundary_nr_pages(dev,
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+					iommu->table_shift);
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 	}
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 	n = iommu_area_alloc(iommu->map, limit, start, npages, shift,
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 			     boundary_size, align_mask);