On 2012-10-30 17:47, Paolo Bonzini wrote: > Il 30/10/2012 13:16, Paolo Bonzini ha scritto: >> A simplified reproducer (that doesn't hang Linux, >> but shows the message) is to start the VM without a backend for the >> virtserialport, and to resume it with a backend, for example >> >> $ qemu-system-x86_64 -device virtio-serial-pci -device virtserialport test.img --enable-kvm -m 512 >> $ qemu-system-x86_64 -device virtio-serial-pci -chardev stdio,id=vs0 -device virtserialport,chardev=vs0 test.img --enable-kvm -m 512 -incoming 'exec:cat foo.ckp' > > Jan, Amit, > > the same bug is also happening without MSI. The reproducer is the same > as above, but with pci=nomsi for Linux guests. After migration, "cat > /dev/vport0p1" will not block, and if you have a NIC on the same line as > virtio-serial it will also not work. > > Do any of you have some time to look at it? Likely not the very next days. :-/ Jan
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