Re: [Xen-users] Inter-VM Shared memory with HVM DomUs

[Todd Deshane <todd.deshane@xxxxxxx>]

On Mon, Aug 29, 2011 at 7:59 PM, Anil Rao <anil.rao@xxxxxxxxxxxx> wrote:
> Hello,
>
> I am interested in having a bunch of HVM DomUs share a memory segment that
> is exported by Dom0. I am currently on a Xen 4.1.0 system with the Jeremy
> PV-OPTs Dom0. For my initial test, my DomU kernel is running a 32-bit PAE
> kernel based on Fedora 15. I configured the PV options to turn on the Xen
> Platform Drivers (configured as modules). When I start the DomU, it cannot
> find the root and swap partitions and then falls into a debug shell.
>
> The Standard Fedora 15 32-bit kernel (with no PV options configured) works
> fine as a HVM DomU on my host. Is there a special recipe that I must follow
> to get PV-on-HVM working? From reading various posts it appears that
> PV-on-HVM is required in order to get inter-VM shared memory to work with
> HVM DomUs. Any thoughts/suggestions would be most appreciated.
>

Take a look here:
http://oss.oracle.com/projects/tmem/

I've also added Dan to the CC he may have some insights.

As he has submitted tmem patches for upstream Linux:
http://xen.markmail.org/search/?q=tmem#query:tmem%20from%3A%22Dan%20Magenheimer%22%20date%3A201107%20+page:1+mid:jvln4hk5agf5onzz+state:results

Thanks,
Todd

-- 
Todd Deshane
http://www.linkedin.com/in/deshantm
http://www.xen.org/products/cloudxen.html
http://runningxen.com/

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