Re: about page migration on UMA

KAMEZAWA Hiroyuki
2007-10-17T06:44:03Z

On Wed, 17 Oct 2007 15:09:19 +0800
"Jacky(GuangXiang Lee)" <gxli@arca.com.cn> wrote:

> seems page migration is used mostly for NUMA platform to improve
> performance.
> But in a UMA architecture, Is it possible to use page migration to move
> pages ?
>

Currently no usage. but someone (Mel ?) will use migration code to do
page defragmentation. In that case, migration will be used.
For memory hot remove, we will need to enable migration on UMA.
(but I don't hear requests to do that...)

But, sys_move_pages() will not work on UMA.

Thanks,
-Kame