tree 28c341353900c87e7ddcd097bb8e599070b3bbf7
parent bdb8205455a31362fc72075583aedd63ff0c944b
author Chris Metcalf <cmetcalf@tilera.com> 1376335522 -0400
committer Chris Metcalf <cmetcalf@tilera.com> 1378234340 -0400

tile PCI RC: add comment about "PCI hole" problem

Explain the rationale of not overlapping the 64-bit DMA window
with the PA range.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>