MAX_DMA_PFN       808 arch/x86/mm/init_64.c 	max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
MAX_DMA_PFN      1043 arch/x86/mm/init_64.c 	if (phys+len <= MAX_DMA_PFN*PAGE_SIZE) {
MAX_DMA_PFN       574 arch/x86/mm/numa_64.c 	max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
MAX_DMA_PFN        87 include/asm-x86/dma.h #define MAX_DMA_ADDRESS ((unsigned long)__va(MAX_DMA_PFN << PAGE_SHIFT))