RE: [RFC] consistent_sync and non L1 cache line aligned buffers

If you think about it, you will see that if you are doing DMA to an
unaligned buffer, and some other unrelated part of the kernel is
accessing another part of the cache line, you are in trouble no matter
what sequence of cache flushes/invalidates/whatever you do.

I sort of assumed this was a given.  I'm used to things like
invalidating just 1514 bytes in a larger buffer, because I know
that it's safe.  However, I can agree with your sentiment, since
the actual reason that I made my invalidate routine safer was
because this was simpler than convincing some other programmers
how to do the right thing :-)

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/