At 01:18 PM 7/15/2003, Darin.Johnson at nokia.com wrote: >I solved the problem (in a non-Linux system) by just flushing the first >and last lines in the requested range, and invalidating the rest. The >very slight performance hit is probably less than testing to see if the >buffer is unaligned.
I don't think so. If you take a look at the assembler output of my patch you'll see that test for unaligned just accesses register, when dcbf may require memory access which is *significantly* slower. In majority of cases consistent_sync is called with properly aligned buffer and I don't want to penalize this path by *unconditionally* (as you are suggesting) flushing start and end of the buffer. Eugene. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
