MAX_DMA_ADDRESS 80 arch/x86/include/asm/dma.h #define MAX_DMA_ADDRESS (PAGE_OFFSET + 0x1000000) MAX_DMA_ADDRESS 83 arch/x86/include/asm/dma.h #define MAX_DMA_ADDRESS ((unsigned long)__va(MAX_DMA_PFN << PAGE_SHIFT)) MAX_DMA_ADDRESS 10 include/asm-generic/dma.h #define MAX_DMA_ADDRESS PAGE_OFFSET