On 02.01.2011, at 11:18, Avi Kivity wrote: > On 01/02/2011 12:15 PM, Jan Kiszka wrote: >> Does any qemu-kvm user rely on the automatic fallback to TCG if KVM >> initialization fails? > > We don't know... > >> If not, then just set kvm_allowed to 1 in qemu-kvm >> and leave the rest as upstream provides it. This fallback is really >> annoying, specifically as the only point of qemu-kvm is, well, running >> over KVM. > > I agree, upstream's behaviour is better, and the proposed -accel is even better. But we can't just change behaviour randomly, even if it's an improvement. Every SUSE released qemu-kvm binary since 10.3 or so disables the fallback already. There were just so many bug reports with random breakage or people frustrated over KVM's speed caused be the fallback that it didn't seem to be worth it. IIRC I even sent a patch to disable the fallback back then - no idea what happened to it. Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
