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Re: [Qemu-devel] [PATCH uq/master 0/3] Fix MSI injection at load time
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH uq/master 0/3] Fix MSI injection at load time |
Date: |
Tue, 30 Oct 2012 17:47:41 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121016 Thunderbird/16.0.1 |
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?
Paolo