Re: [Qemu-devel] incorrect memory size inside vm

[Andrey Korolyov]

On Wed, Jun 17, 2015 at 6:33 PM, Vasiliy Tolstov <address@hidden> wrote:
> 2015-06-17 17:09 GMT+03:00 Andrey Korolyov <address@hidden>:
>> The rest of visible memory is eaten by reserved kernel areas, for us
>> this was a main reason to switch to a hotplug a couple of years ago.
>> You would not be able to scale a VM by an order of magnitude with
>> regular balloon mechanism without mentioned impact, unfortunately.
>> Igor Mammedov posted hotplug-related patches for 2.6.32 a while ago,
>> though RHEL6 never adopted them by some reason.
>
>
> Hmm.. Thanks for info, from what version of kernel memory hotplug works?
>
> --
> Vasiliy Tolstov,
> e-mail: address@hidden

Currently QEMU memory hotplug should work with 3.8 and onwards.
Mentioned patches are an adaptation for an older frankenkernel of 3.8`
functionality.