Re: [Xen-users] xen over quemu OR quemu in Xen domU on a system with HVM-capable CPU

[Igor Chubin <igor@xxxxxxx>]

...
> > But what about HVM-capable systems?
> > 
> > 
> > Please tell me are there the same restrictions for the 
> > hvm-capable systems?
> 
> If you load Linux (or such) in HVM mode, you can run kqemu inside that
> Linux. I'm not entirely sure I understand the advantage of this,
> compared to running the OS you want to run in QEMU inside a HVM virtual
> machine in the first place, but yes, it's possible. 
> 


Mark and Mats,

Thank for your answers.

My current task is to run as many as possible different operating systems
in the same Xen domain 0 on the same machine (HVM-capable machine).

Better to run them inside domUs, but if this impossible
may be I could run qeumu+kquemu  processes inside dom0
(and operating system on them)?

+------++------++------++------++------++------+
|      ||Win   ||      ||      ||      ||      |
|Linux1||(HVM) ||Solaris| OS1  || OS2  || OS3  |
+------++------++------++------++------++------+
+------++------++------++------++------++------+
|      ||      ||      ||quemu+||qemu+ ||qemu+ |
| domU || domU || domU ||kquemu||kquemu||kquemu|
+------++------++------++------++------++------+
+----------------------------------------------+
|                                              |
|                Xen domain 0                  |
+----------------------------------------------+

As far as I know there are problems in running of some 
legacy operating systems in domU (HVM).


I have personally faced problem with (unmodified) FreeBSD 5 (and 6) 
running in the Xen HVM domU (this problem have discussed here; as
far as I remember the problem is related to real mode loader).

But I need not only FreeBSD but several other legacy operating
systems.

Of course, I'm not sure, that this systems will run in quemu, 
but I want to try.


> --
> Mats
> > 
> > Thank you!
> > 
> > 
> > -- 
> > WBR, i.m.chubin
> > 
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
> > 
> > 
> > 
> 

-- 
WBR, i.m.chubin


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