Messages in this thread | | | Date | Fri, 29 Jun 2012 10:37:12 +0900 | From | Minchan Kim <> | Subject | Re: [PATCH v2 0/4] make balloon pages movable by compaction |
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Hi Rafael,
On 06/29/2012 06:49 AM, Rafael Aquini wrote:
> This patchset follows the main idea discussed at 2012 LSFMMS section: > "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/
Could you summarize the problem, solution instead of link URL in cover-letter? IIUC, the problem is that it is hard to get contiguous memory in guest-side after ballooning happens because guest-side memory could be very fragmented by ballooned page. It makes THP page allocation of guest-side very poor success ratio.
The solution is that when memory ballooning happens, we allocates ballooned page as a movable page in guest-side because they can be migrated easily so compaction of guest-side could put together them into either side so that we can get contiguous memory. For it, compaction should be aware of ballooned page.
Right?
-- Kind regards, Minchan Kim
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