Re: [Qemu-devel] [PATCH] Share Vmware communication port between devices

[Anthony Liguori]

On Tue, 2007-08-21 at 20:17 +0200, Hervé Poussineau wrote:
> Hi,
> 
> VMware registers the port 0x5658 to communicate between guest and host.
> At the moment, vmmouse.c is the only one to use this communication channel,
> so it registers the port. IMO, this design is not right because it will be
> hard to implement other functionalities of VMware.
> 
> I extracted non-mouse part from this file and created a framework for VMware
> communication in a new file. Devices can then register for specific
> commands, so communication port will be shared between devices.
> I also added support for "Get RAM size" command. More commands will be added
> later.

What other things are used for this port and where is it documented?
What is the "Get RAM size" command used by?

AFAIK, the vmware tools have a EULA that prevents them from being used
in QEMU guests.  Unless there's an open source driver that uses these
commands, I don't see the use of supporting them if the drivers are
restricted from being used within QEMU.

Regards,

Anthony Liguori

> Attached files:
> 0 - vmmouse-formatting.diff
>       Replace tabs by 8 spaces. No code change
> 1 - adding-vmport.diff
>       Add a generic framework for VMware communication port
> 2 - vmmouse-using-vmport.diff
>       Use the framework for the VMware mouse emulation
> 
> Hervé