* Paolo Bonzini (pbonzini@xxxxxxxxxx) wrote: > > > On 10/03/2015 19:21, Bandan Das wrote: > > Paolo Bonzini <pbonzini@xxxxxxxxxx> writes: > > > >> On 10/03/2015 17:57, Dr. David Alan Gilbert wrote: > >>> I'm seeing something similar; it's very intermittent and generally > >>> happening right at boot of the guest; I'm running this on qemu > >>> head+my postcopy world (but it's happening right at boot before postcopy > >>> gets a chance), and I'm using a 3.19ish kernel. Xeon E5-2407 in my case > >>> but hey maybe I'm seeing a different bug. > > > > Probably a tangent but is the qemu trace identical to what Andrey is seeing ? > > From a cursory look and my limited understanding, it seems his failure is #GP > > when executing video bios. > > > >> Same here on 3.16 + Xeon E5 v3 kernel. > > > > I will try to reproduce this on a v2. > > I see several failures, usually mine have suberror 1. With a 32-VCPU > guest I can reproduce it roughly half of the time. Oh yes, that helps: while true; do (sleep 5; echo -e '\001cq\n')|/opt/qemu-try-world3/bin/qemu-system-x86_64 -machine pc-i440fx-2.3,accel=kvm -m 8192 -smp 20 -nographic -device sga; done gets it under a minute on my other box; Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz (Running a 3.18) Dave > Paolo -- Dr. David Alan Gilbert / dgilbert@xxxxxxxxxx / Manchester, UK -- 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
