From: Paolo Bonzini <pbonzini@redhat.com>
To: unlisted-recipients:; (no To-header on input)
Cc: qemu-devel@nongnu.org, avi@redhat.com, mtosatti@redhat.com,
jan.kiszka@siemens.com, kvm@vger.kernel.org,
Amit Shah <amit.shah@redhat.com>
Subject: Re: [PATCH uq/master 0/3] Fix MSI injection at load time
Date: Tue, 30 Oct 2012 17:47:41 +0100 [thread overview]
Message-ID: <509004AD.3010500@redhat.com> (raw)
In-Reply-To: <1351599394-24876-1-git-send-email-pbonzini@redhat.com>
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
WARNING: multiple messages have this Message-ID (diff)
From: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, jan.kiszka@siemens.com, mtosatti@redhat.com,
qemu-devel@nongnu.org, avi@redhat.com,
Amit Shah <amit.shah@redhat.com>
Subject: Re: [Qemu-devel] [PATCH uq/master 0/3] Fix MSI injection at load time
Date: Tue, 30 Oct 2012 17:47:41 +0100 [thread overview]
Message-ID: <509004AD.3010500@redhat.com> (raw)
In-Reply-To: <1351599394-24876-1-git-send-email-pbonzini@redhat.com>
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
next prev parent reply other threads:[~2012-10-30 16:47 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-30 12:16 [PATCH uq/master 0/3] Fix MSI injection at load time Paolo Bonzini
2012-10-30 12:16 ` [Qemu-devel] " Paolo Bonzini
2012-10-30 12:16 ` [PATCH 1/3] kvm: move KVM_GET_LAPIC/KVM_SET_LAPIC to hw/kvm/apic.c Paolo Bonzini
2012-10-30 12:16 ` [Qemu-devel] " Paolo Bonzini
2012-10-30 18:13 ` Jan Kiszka
2012-10-30 18:13 ` [Qemu-devel] " Jan Kiszka
2012-10-30 12:16 ` [PATCH 2/3] apic: add get/put methods Paolo Bonzini
2012-10-30 12:16 ` [Qemu-devel] " Paolo Bonzini
2012-10-30 18:17 ` Jan Kiszka
2012-10-30 18:17 ` [Qemu-devel] " Jan Kiszka
2012-10-30 12:16 ` [PATCH 3/3] apic: always update the in-kernel status after loading Paolo Bonzini
2012-10-30 12:16 ` [Qemu-devel] " Paolo Bonzini
2012-10-30 12:38 ` Avi Kivity
2012-10-30 12:38 ` [Qemu-devel] " Avi Kivity
2012-10-30 14:16 ` Paolo Bonzini
2012-10-30 14:16 ` [Qemu-devel] " Paolo Bonzini
2012-10-30 18:21 ` Jan Kiszka
2012-10-30 18:21 ` [Qemu-devel] " Jan Kiszka
2012-11-02 14:53 ` Paolo Bonzini
2012-11-02 14:53 ` [Qemu-devel] " Paolo Bonzini
2012-11-02 14:59 ` Jan Kiszka
2012-11-02 14:59 ` [Qemu-devel] " Jan Kiszka
2012-11-02 15:07 ` Gerd Hoffmann
2012-11-02 15:07 ` [Qemu-devel] " Gerd Hoffmann
2012-11-02 15:13 ` Paolo Bonzini
2012-11-02 15:13 ` [Qemu-devel] " Paolo Bonzini
2012-11-02 15:17 ` Gerd Hoffmann
2012-11-02 15:17 ` [Qemu-devel] " Gerd Hoffmann
2012-11-02 15:21 ` Paolo Bonzini
2012-11-02 15:21 ` [Qemu-devel] " Paolo Bonzini
2012-10-30 18:17 ` Jan Kiszka
2012-10-30 18:17 ` [Qemu-devel] " Jan Kiszka
2012-10-30 12:16 ` [PATCH 4/3] ioapic: change pre_save/post_load methods to get/put Paolo Bonzini
2012-10-30 12:16 ` [Qemu-devel] " Paolo Bonzini
2012-10-30 18:18 ` Jan Kiszka
2012-10-30 18:18 ` [Qemu-devel] " Jan Kiszka
2012-10-30 12:16 ` [PATCH 5/3] ioapic: unify reset callbacks Paolo Bonzini
2012-10-30 12:16 ` [Qemu-devel] " Paolo Bonzini
2012-10-30 16:47 ` Paolo Bonzini [this message]
2012-10-30 16:47 ` [Qemu-devel] [PATCH uq/master 0/3] Fix MSI injection at load time Paolo Bonzini
2012-10-30 18:22 ` Jan Kiszka
2012-10-30 18:22 ` [Qemu-devel] " Jan Kiszka
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