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SubjectRe: virtio: Add memory statistics reporting to the balloon driver (V4)
On 11/30/2009 06:14 PM, Adam Litke wrote:
> Changes since V3:
> - Do not do endian conversions as they will be done in the host
> - Report stats that reference a quantity of memory in bytes
> - Minor coding style updates
>
> Changes since V2:
> - Increase stat field size to 64 bits
> - Report all sizes in kb (not pages)
> - Drop anon_pages stat and fix endianness conversion
>
> Changes since V1:
> - Use a virtqueue instead of the device config space
>
> When using ballooning to manage overcommitted memory on a host, a system for
> guests to communicate their memory usage to the host can provide information
> that will minimize the impact of ballooning on the guests. The current method
> employs a daemon running in each guest that communicates memory statistics to a
> host daemon at a specified time interval. The host daemon aggregates this
> information and inflates and/or deflates balloons according to the level of
> host memory pressure. This approach is effective but overly complex since a
> daemon must be installed inside each guest and coordinated to communicate with
> the host. A simpler approach is to collect memory statistics in the virtio
> balloon driver and communicate them directly to the hypervisor.
>
> This patch enables the guest-side support by adding stats collection and
> reporting to the virtio balloon driver.
>
>

What about a spec update? Did that happen and I just missed it?

--
error compiling committee.c: too many arguments to function



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