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Re: [libvirt] libvirt git doesn't know to use -no-kvm on qemu-kvm 1.2



On Sat, Dec 15, 2012 at 05:08:27PM -0500, Cole Robinson wrote:
> Libvirt git isn't correctly starting plain qemu guests when using qemu-kvm 1.2
> (on Fedora 18). The problem is that -no-kvm is not passed to the binary, so
> the default mode is used, which is kvm=enabled.
> 
> The issue comes from capabilities probing: we probe against 'qemu-kvm -M
> none', which responds to 'query-kvm' with enabled=False, when regular
> invocation is enabled=True.
> 
> We should be able to work around this by using -machine ...,accel=kvm|tcg
> unconditionally for qemu >= 1.2, and not have to do the -enable-kvm/-no-kvm
> dance. accel= has been around for a while and libguestfs uses it so it should
> be reliable.

Yep, we should definitely use accel= for modern qemu.

Daniel
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