Re: [Qemu-discuss] WinXP Guest: New hardware found - VGA controller

[Fam Zheng]

On Wed, 01/25 18:37, Narcis Garcia wrote:
> El 25/01/17 a les 12:53, Fam Zheng ha escrit:
> > On Wed, 01/25 12:43, Narcis Garcia wrote:
> >> El 25/01/17 a les 09:49, Alberto Garcia ha escrit:
> >>> On Mon, Jan 23, 2017 at 01:00:26AM +0100, Joe wrote:
> >>>
> >>>> I'm trying Qemu (2.8.0) on Slackware GNU Linux 14.2 (64-bit) host.
> >>>> I've a Windows XP (guest) raw image which was working with Qemu
> >>>> times ago (I used it on an older Slackware version as host system).
> >>>
> >>> The default hardware emulated by QEMU changes in each new version.
> >>>
> >>> If it worked with an earlier version and now you find that the guest
> >>> is detecting new hardware, try forcing the emulation of a machine from
> >>> an older version of QEMU.
> >>>
> >>> For example:
> >>>
> >>> qemu-system-i386 -M pc-i440fx-1.6 -m 2G ...
> >>>
> >>> Type 'qemu-system-i386 -M ?' for a complete list.
> >>>
> >>> Berto
> >>>
> >>
> >> Is there some documentation about default hardware for each QEMU version?
> >> For similar reason, I'm interested in to use equivalent specification by
> >> parameters, to "freeze" a lot of guests' hardware environments.
> >>
> >>
> > 
> > In this case you may want to use virt-manager/libvirt to manage your VMs, 
> > which
> > will take care of stablizing QEMU parameters across version changes and even
> > more importantly migration (in case you use it).
> > 
> > Fam
> > 
> 
> 3 reasons: I prefer to control what is Qemu emulating, I already have
> guest OSes configured for a Qemu defaults, and I use my own virtual
> manager (not the libvirt one).
> I suppose libvirt developers had the same question to solve.
> 

libvirt uses -nodefaults to build the emulated devices explicitly.

Fam