Re: must use VMware sometimes

[Scott Serr <serrs-LOV8xbAlIgXk1uMJSBkQmQ@public.gmane.org>]

Avi Kivity wrote:
> Scott Serr wrote:
>> I must use VMware sometimes for colaboration projects where others 
>> are using VMware.  And also a situation where I have a VERY old 
>> development environment perfectly tweaked on Win98.  I have to do one 
>> of these say 10% of the time.
>>
>> 100% of the time I'd like to use KVM (or Xen).  I'd like to not have 
>> to close KVM VMs and unload the modules just so I can do a little 
>> work in VMware.
>>
>> Is this possible?  Or will it ever be possible?  Initially I thought 
>> since VMware (workstation) didn't use any VM extensions of 
>> processors, it would not interfere with the KVM or Xen... but I seem 
>> to be wrong.
>>
>> Tell me... use VMware basically prohibits me from using KVM or Xen?
>>   
>
> I believe VMware uses real mode transiently, which is not possible 
> when vmx extensions are enabled.  So using VMware and kvm concurrently 
> is not possible.
>
> Maybe one of the following will suit:
> - run the Windows 98 image in qemu (without kvm).  This will have 
> lower performance, but may be adequate.
> - run VMware within a kvm VM, and run Windows 98 within that.
> - unload the modules.  This isn't a lot of fun and prevents concurrent 
> operation.
>
Thanks Avi,

#2 sounds good to me "run VMware within a kvm VM, and run Win98 within 
that."  I've gone all the way down this path with Xen but ended at a 
road block.  VMware Workstation says it can run in a Xen VM and halts.  
If you grab VMware Server it lets you go, but during an install of 
CentOS early on, it freezes.

I'm not sure #2 is possible with KVM.  Can someone comment if they are 
doing this reliably?

Thanks,
-Scott


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