On Tue, Jul 15, 2003 at 04:04:24PM -0700, Darin.Johnson at nokia.com wrote: > > > IMHO, the easiest solution is > > alignment of buffers.....plus it's likely to be a performance > > improvement. > > True, it's the easiest solution for the kernel developer, but > requires more work from driver authors. Which is ok, *if* it's > well documented and everyone knows buffers must be aligned, > and that's the problem. I think some people implicitly understand > these issues, and assume that everyone else thinks the same way.
What more do you expect than the "What memory is DMA'able?" section in Documentation/DMA-mapping.txt? It's there to refer the developers to. Some maintainers have bugs in their drivers/subsystems. They just need a patch from the people that depend on the bug fix. I know you are now focusing on some 8xx buffer issue but the original issue was surrounding generic SCSI subsystem bugs. Regards, -- Matt Porter mporter at kernel.crashing.org ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
