max_dma_pfn 224 arch/arm/mm/dma-mapping.c unsigned long max_dma_pfn = min(max_pfn - 1, arm_dma_pfn_limit); max_dma_pfn 230 arch/arm/mm/dma-mapping.c if (dma_to_pfn(dev, mask) < max_dma_pfn) { max_dma_pfn 235 arch/arm/mm/dma-mapping.c max_dma_pfn + 1);