[Qemu-devel] [RFC PATCH 1/7] devicetree: Add 8k instead of double dtb size when reserving extra memory

[Paul Brook]

> If a small 'seed' dtb file is loaded into qemu and then heavily modified
> (say for runtime population of all the device nodes), then 2x the dtb
> size turns out not to be very much.
> 
> This patch changes the device tree loading code to add a fixed 8k of
> additional space to the dtb buffer.

In that case you almost certainly want double+8k. Or have the calleee tell you 
how much they're expecting to grow the tree.

Paul