On 23 Oct 2001, Eric W. Biederman wrote: > value 5 write-protected is a very badly named MTRR setting. It means > that reads are cached, but writes invalidate the cache line. Which > sounds like it could easily explain what you are seeing.
It exactly explains my problem, which Ollie proposed was the problem a little while back. I should listen to Ollie more closely :-) I'll go try this. ron
