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[Qemu-devel] Re: [patch uq/master 1/2] virtio-pci: wake up iothread on V

From: Avi Kivity
Subject: [Qemu-devel] Re: [patch uq/master 1/2] virtio-pci: wake up iothread on VIRTIO_PCI_QUEUE_NOTIFY
Date: Mon, 22 Feb 2010 16:20:52 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20100120 Fedora/3.0.1-1.fc12 Thunderbird/3.0.1

On 02/22/2010 03:59 PM, Marcelo Tosatti wrote:
VIRTIO_PCI_QUEUE_NOTIFY is used to inform availability of new buffers,
so wakeup the iothread to process that information immediately.

Reported-by: Amit Shah<address@hidden>
Signed-off-by: Marcelo Tosatti<address@hidden>

Index: qemu/hw/virtio-pci.c
--- qemu.orig/hw/virtio-pci.c
+++ qemu/hw/virtio-pci.c
@@ -204,6 +204,7 @@ static void virtio_ioport_write(void *op
          virtio_queue_notify(vdev, val);
+        qemu_notify_event();

virtio_queue_notify() will call ->handle_output(), which should either do what's needed to be done, or wake up some iothread itself.

error compiling committee.c: too many arguments to function

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