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[Qemu-devel] Re: [PATCH v6 18/18] virtio-serial-bus: wake up iothread up


From: Anthony Liguori
Subject: [Qemu-devel] Re: [PATCH v6 18/18] virtio-serial-bus: wake up iothread upon guest read notification
Date: Tue, 27 Apr 2010 12:41:27 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-4.fc12 Lightning/1.0pre Thunderbird/3.0

On 04/27/2010 07:34 AM, Amit Shah wrote:
From: Marcelo Tosatti<address@hidden>

Wake up iothread when buffers are consumed.

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

What's the race here?  This looks very odd to me.

Regards,

Anthony Liguori

---
  hw/virtio-serial-bus.c |    1 +
  1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 97694d5..ee868e9 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -417,6 +417,7 @@ static void handle_output(VirtIODevice *vdev, VirtQueue *vq)

  static void handle_input(VirtIODevice *vdev, VirtQueue *vq)
  {
+    qemu_notify_event();
  }

  static uint32_t get_features(VirtIODevice *vdev, uint32_t features)





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