On 07/26/2011 03:24 AM, Stefan Hajnoczi wrote:
On Tue, Jul 26, 2011 at 6:58 AM, Prateek Sharma<prateeks@xxxxxxxxxxxxxx> wrote:
On Tue, 26 Jul 2011, Stefan Hajnoczi wrote:
On Tue, Jul 26, 2011 at 6:05 AM, Prateek Sharma<prateeks@xxxxxxxxxxxxxx>
wrote:
Hi all,
Is there any equivalent of qemu's virtagent in qemu-kvm?
[http://lists.gnu.org/archive/html/qemu-devel/2011-01/msg02149.html] .
In particular , i want to share pages between KVM guests and the host .
Is
there an appropriate mechanism for this in existence which i could use ?
Another nice feature virtagent provides is the ability to see guest dmesg
output in the host...
virtagent doesn't share pages between guest and host AFAIK.
Have you looked at hw/ivshmem.c?
Most of the time you don't need to actually share pages between guest
and host. Use existing mechanisms like networking or serial to
communicate instead.
Stefan
Thanks for the quick response!
I was tempted by virtagent because it provides dmesg output directly,
something which is exactly what i need.
Anyway, looks like i'll need to fallback to serial/networking, as you
suggested.
On a related note, is porting virtagent to qemu-kvm
possible/useful/in-the-pipeline ?
I expect qemu-ga will be merged into qemu-kvm.git when they merge from
qemu.git again soon.
Mike: I don't see a dmesg command in the guest schema in qemu.git. Is
there a recommended way of getting dmesg from the host (maybe read
file /var/log/messages)?
Yup, the guest-file-read RPC to access /var/log/messages is the only
means in the current version. There was a dmesg RPC in earlier
prototypes but it was removed in favor of lower-level mechanisms.
Stefan
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