Re: Conflicting parameters on qemu call
On Thu, Aug 20, 2020 at 08:11:30PM +0200, Jan Walzer wrote:
Hi Lists,
I currently have the issue of wanting to use emu-system-x86_64 on a ppc64le platform.
It is imperative to pass the "-accel tcg,thread=multi” parameter to qemu
when starting an instance, as without that, it will only use one thread
and hence of limited/no use.
The problem is, that libvirt itself, passes “-machine q35,accel=tcg” to
qemu, which is a different parameter, that conflicts with the other one.
Can we discuss, if I either have overlooked something, or is there a workaround, or is
this a bug?
What you're trying todo is intentionally not available.
The memory ordering constraints needed for running x86_64 guests on ppc64
hosts cannot be satisfied, so multi-threaded TCG is not available.
For any guest/host combination where multi-thread TCG is safe to use, QEMU
will enable it automatically, so nothing is required in libvirt.
Regards,
Daniel
--
|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org -o- https://fstop138.berrange.com :|
|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|