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Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify |
Date: |
Tue, 25 Jan 2011 09:54:00 +0000 |
On Tue, Jan 25, 2011 at 9:49 AM, Stefan Hajnoczi <address@hidden> wrote:
> If any other vcpu interruption makes virtio-ioeventfd chug along then
> why are you seeing 100% CPU livelock? My theory is that dynticks has
> a race condition which causes timers to stop working in QEMU.
I forgot to mention that you can test this theory by building without
I/O thread and running with -clock hpet.
If the guest no longer hangs, then this suggests you're seeing the
dynticks race condition.
Stefan
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Kevin Wolf, 2011/01/24
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2011/01/24
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Kevin Wolf, 2011/01/24
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2011/01/24
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Kevin Wolf, 2011/01/24
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify,
Stefan Hajnoczi <=
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Anthony Liguori, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Anthony Liguori, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2011/01/25
- Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Anthony Liguori, 2011/01/25