Just looked through the pseudo files in the
/proc/zoneinfo has some interesting information.
There are two zones in my current system:
normal. We also have 2 nodes, and thus the file is shown as:
- Node0 DMA
- Node0 DMA32
- Node0 normal
- Node1 normal
Each section has how many
present pages there are. At the end of the section there is the
start_pfn that shows us the physical address of the beginning of the zone.
Thus we can approximate the physical address space of our system by using the
PAGE_SIZE and also using the number of