diff options
| author | Scott Wood <scottwood@freescale.com> | 2014-08-08 18:40:45 -0500 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-09-03 17:58:22 -0500 |
| commit | 84f44cc56c0994df7778bde55c8d5e9aa9fff8f5 (patch) | |
| tree | c757d5564181fc2092e59fbb025cfb93eb86393d /mm | |
| parent | cf5621032fbe7354c0c3fff17958b7029bbc9f30 (diff) | |
powerpc/fsl-pci: Limit ZONE_DMA32 to 2GiB on 64-bit platforms
FSL PCI cannot directly address the whole lower 4 GiB due to
conflicts with PCICSRBAR and outbound windows. By the time
max_direct_dma_addr is set to the precise limit, it will be too late to
alter the zone limits, but we should always have at least 2 GiB mapped
(unless RAM is smaller than that).
Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions