----- Original Message -----
From: "Gleb O. Raiko" <firstname.lastname@example.org>
To: "wuming" <email@example.com>
Sent: Monday, December 20, 2004 4:43 PM
Subject: Re: problem about dma
> In 2.4, memcpy's prefetch may (and, in practice, do, no smiles, it cost
> me a lot of time to realize) access that memory. I though it has been
> fixed in 2.6 someday.
Thank you! :)
But I think it is not the only reason, because the CPU on my platform does not
support the "pref" instruction. So, memcpy's prefetch may have no effect on
arrange of memory.