Re: [U-Boot] [PATCH 7/9] CACHE: net: Test if start address is aligned

25 Jun 2012


      Hi Marek,
On Sun, Jun 24, 2012 at 7:17 PM, Marek Vasut marex@denx.de wrote:
...
This prevents the scenario where data cache is on and the
device uses DMA to deploy data. In that case, it might not
be possible to flush/invalidate data to RAM properly. The
other option is to use bounce buffer, but that involves a
lot of copying and therefore degrades performance rapidly.
Therefore disallow this possibility of unaligned load address
altogether if data cache is on.
Signed-off-by: Marek Vasut marex@denx.de
Cc: Joe Hershberger joe.hershberger@gmail.com

Acked-by: Joe Hershberger joe.hershberger@gmail.com