start,size has the benefit of being easier to search for (start,end
usually gives you the preceeding vector from the one you want, as first
result).
Suggested-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NNicholas Piggin <npiggin@gmail.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>