[libvirt] [Qemu-devel] incorrect memory size inside vm

[Andrey Korolyov]

On Thu, Jun 18, 2015 at 12:21 AM, Vasiliy Tolstov <v.tolstov at selfip.ru> wrote:
> 2015-06-17 19:26 GMT+03:00 Vasiliy Tolstov <v.tolstov at selfip.ru>:
>> This is band news =( i have debian wheezy that have old kernel...
>
>
> Does it possible to get proper results with balloon ? For example by
> patching qemu or something like this?
>
>

Yes, but I`m afraid that I don`t fully understand why do you need this
when pure hotplug mechanism is available, aside may be nice memory
stats from balloon and easy-to-use deflation. Just populate a couple
of static dimms with small enough 'base' e820 memory and use  balloon
on this setup, you`ll get the reserved memory footprint as small as it
would be in setup with equal overall amount of memory populated via
BIOS. For example, you may use -m 128 ... {handful amount of memory
placed in memory slots} setup to achieve the thing you want.