Re: sharing memory

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Francesco Cipollone wrote:
> Hy,
> I'm writing my thesis on Virtualizzation and it's application to security.
> Now for Xen Hypervisor there are a lot of application already 
> developed (like XenRim, XenFit, XenKimono) and very nice ideas...
> I want to transfer these ideas on Kvm...but is a little bit harder 
> than i thought.
> So the firs treat was to do an application in the "host" machine that 
> comunicate in some way with another application in the "guest" machine 
> (the VM).
> I've tried to use the Libvirt function...but they're designed 
> principally to work with Xen...
> So I guest how i can read the memory of a VM ?!
> Must I interface my application in the host machine directly with the 
> Qemu ?
> There is a better solution supported by KVM to implement shared memory 
> between VMs or between VMs and "host" system?
>  

kvm will soon support an interface to mmap() a file to a VM.  You could 
then mmap one file to several virtual machines and thus achieve shared 
memory.  It would also work with system V shared memory.

-- 
Any sufficiently difficult bug is indistinguishable from a feature.


-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems?  Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >>  http://get.splunk.com/