71 lines
1.9 KiB
Diff
71 lines
1.9 KiB
Diff
From ac48d782f3b91b2e9962ded5f8a55bd3929a82a5 Mon Sep 17 00:00:00 2001
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From: Michael S. Tsirkin <mst@redhat.com>
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Date: Wed, 24 Feb 2010 21:09:54 +0200
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Subject: [PATCH] vhost: used addr migration fix
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Enable used buffer logging when migration starts.
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Fixed 'id XX is not a head' message after migration.
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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---
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hw/vhost.c | 29 +++++++++++++++++++++++++++--
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1 files changed, 27 insertions(+), 2 deletions(-)
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diff --git a/hw/vhost.c b/hw/vhost.c
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index 54386e1..48034ba 100644
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--- a/hw/vhost.c
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+++ b/hw/vhost.c
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@@ -325,7 +325,7 @@ static int vhost_virtqueue_set_addr(struct vhost_dev *dev,
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return 0;
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}
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-static int vhost_dev_set_log(struct vhost_dev *dev, bool enable_log)
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+static int vhost_dev_set_features(struct vhost_dev *dev, bool enable_log)
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{
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uint64_t features = dev->acked_features;
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int r;
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@@ -336,6 +336,31 @@ static int vhost_dev_set_log(struct vhost_dev *dev, bool enable_log)
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return r < 0 ? -errno : 0;
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}
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+static int vhost_dev_set_log(struct vhost_dev *dev, bool enable_log)
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+{
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+ int r, t, i;
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+ r = vhost_dev_set_features(dev, enable_log);
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+ if (r < 0)
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+ goto err_features;
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+ for (i = 0; i < dev->nvqs; ++i) {
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+ r = vhost_virtqueue_set_addr(dev, dev->vqs + i, i,
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+ enable_log);
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+ if (r < 0)
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+ goto err_vq;
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+ }
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+ return 0;
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+err_vq:
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+ for (; i >= 0; --i) {
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+ t = vhost_virtqueue_set_addr(dev, dev->vqs + i, i,
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+ dev->log_enabled);
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+ assert(t >= 0);
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+ }
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+ t = vhost_dev_set_features(dev, dev->log_enabled);
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+ assert(t >= 0);
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+err_features:
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+ return r;
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+}
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+
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static int vhost_client_migration_log(struct CPUPhysMemoryClient *client,
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int enable)
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{
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@@ -544,7 +569,7 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev)
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{
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int i, r;
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- r = vhost_dev_set_log(hdev, hdev->log_enabled);
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+ r = vhost_dev_set_features(hdev, hdev->log_enabled);
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if (r < 0)
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goto fail;
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r = ioctl(hdev->control, VHOST_SET_MEM_TABLE, hdev->mem);
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--
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1.6.6.1
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