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From: | Rusty Russell |
Subject: | [Qemu-devel] Re: virtio: Add memory statistics reporting to the balloon driver |
Date: | Tue, 10 Nov 2009 13:12:02 +1030 |
User-agent: | KMail/1.12.2 (Linux/2.6.31-14-generic; KDE/4.3.2; i686; ; ) |
On Tue, 10 Nov 2009 03:02:06 am Adam Litke wrote: > A simpler approach is to collect memory statistics in the virtio > balloon driver and communicate them to the host via the device config space. There are two issues I see with this. First, there's an atomicity problem since you can't tell when the stats are consistent. Second, polling is ugly. A stats vq might solve this more cleanly? Rusty.
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