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| author | Rusty Russell <rusty@rustcorp.com.au> | 2011-05-30 21:14:12 +0400 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2011-05-30 05:44:12 +0400 |
| commit | 990c91f0af46c57f0291060d928c7ab82f9d5667 (patch) | |
| tree | 72a347b09509e3658b12d4e013f072bf2b771299 /Documentation | |
| parent | bc805a03c26e1e25171bc627c6264553d27f746c (diff) | |
| download | linux-990c91f0af46c57f0291060d928c7ab82f9d5667.tar.xz | |
lguest: remove support for VIRTIO_F_NOTIFY_ON_EMPTY.
No virtio device does this any more, so no need to clutter lguest with it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virtual/lguest/lguest.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/Documentation/virtual/lguest/lguest.c b/Documentation/virtual/lguest/lguest.c index 711ba9e9a007..cd9d6af61d07 100644 --- a/Documentation/virtual/lguest/lguest.c +++ b/Documentation/virtual/lguest/lguest.c @@ -135,9 +135,6 @@ struct device { /* Is it operational */ bool running; - /* Does Guest want an intrrupt on empty? */ - bool irq_on_empty; - /* Device-specific data. */ void *priv; }; @@ -637,10 +634,7 @@ static void trigger_irq(struct virtqueue *vq) /* If they don't want an interrupt, don't send one... */ if (vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT) { - /* ... unless they've asked us to force one on empty. */ - if (!vq->dev->irq_on_empty - || lg_last_avail(vq) != vq->vring.avail->idx) - return; + return; } /* Send the Guest an interrupt tell them we used something up. */ @@ -1057,15 +1051,6 @@ static void create_thread(struct virtqueue *vq) close(vq->eventfd); } -static bool accepted_feature(struct device *dev, unsigned int bit) -{ - const u8 *features = get_feature_bits(dev) + dev->feature_len; - - if (dev->feature_len < bit / CHAR_BIT) - return false; - return features[bit / CHAR_BIT] & (1 << (bit % CHAR_BIT)); -} - static void start_device(struct device *dev) { unsigned int i; @@ -1079,8 +1064,6 @@ static void start_device(struct device *dev) verbose(" %02x", get_feature_bits(dev) [dev->feature_len+i]); - dev->irq_on_empty = accepted_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY); - for (vq = dev->vq; vq; vq = vq->next) { if (vq->service) create_thread(vq); @@ -1564,7 +1547,6 @@ static void setup_tun_net(char *arg) /* Set up the tun device. */ configure_device(ipfd, tapif, ip); - add_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY); /* Expect Guest to handle everything except UFO */ add_feature(dev, VIRTIO_NET_F_CSUM); add_feature(dev, VIRTIO_NET_F_GUEST_CSUM); |