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...ang <jasowang at redhat.com> > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.c | 24 +++++++----------------- > 1 file changed, 7 insertions(+), 17 deletions(-) > > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index a502f1a..a1c06e7 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -294,8 +294,11 @@ static void vhost_vq_meta_reset(struct vhost_dev *d) > { > int i; > > - for (i = 0; i < d->nvqs; ++i) > + for (i = 0; i < d->nvqs; ++i) { > + mutex_lock(&a...

...ang <jasowang at redhat.com> > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.c | 24 +++++++----------------- > 1 file changed, 7 insertions(+), 17 deletions(-) > > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index a502f1a..a1c06e7 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -294,8 +294,11 @@ static void vhost_vq_meta_reset(struct vhost_dev *d) > { > int i; > > - for (i = 0; i < d->nvqs; ++i) > + for (i = 0; i < d->nvqs; ++i) { > + mutex_lock(&a...

...return -EFAULT; + if (features & ~VHOST_NET_BACKEND_FEATURES) + return -EOPNOTSUPP; + return vhost_net_set_backend_features(n, features); case VHOST_RESET_OWNER: return vhost_net_reset_owner(n); case VHOST_SET_OWNER: diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a502f1a..6f6c42d 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -315,6 +315,7 @@ static void vhost_vq_reset(struct vhost_dev *dev, vq->log_addr = -1ull; vq->private_data = NULL; vq->acked_features = 0; + vq->acked_backend_features = 0; vq->log_base = NULL; vq-&gt...

...return -EFAULT; + if (features & ~VHOST_NET_BACKEND_FEATURES) + return -EOPNOTSUPP; + return vhost_net_set_backend_features(n, features); case VHOST_RESET_OWNER: return vhost_net_reset_owner(n); case VHOST_SET_OWNER: diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a502f1a..6f6c42d 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -315,6 +315,7 @@ static void vhost_vq_reset(struct vhost_dev *dev, vq->log_addr = -1ull; vq->private_data = NULL; vq->acked_features = 0; + vq->acked_backend_features = 0; vq->log_base = NULL; vq-&gt...

...at gmail.com> Acked-by: Jason Wang <jasowang at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 24 +++++++----------------- 1 file changed, 7 insertions(+), 17 deletions(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a502f1a..a1c06e7 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -294,8 +294,11 @@ static void vhost_vq_meta_reset(struct vhost_dev *d) { int i; - for (i = 0; i < d->nvqs; ++i) + for (i = 0; i < d->nvqs; ++i) { + mutex_lock(&d->vqs[i]->mutex); __vhost_vq_met...

...spotmail.com Fixes: f88949138058 ("vhost: introduce O(1) vq metadata cache") Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a502f1a..ed31145 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -1560,9 +1560,12 @@ int vhost_init_device_iotlb(struct vhost_dev *d, bool enabled) d->iotlb = niotlb; for (i = 0; i < d->nvqs; ++i) { - mutex_lock(&d->vqs[i]->mutex); - d->vqs[i]->iotlb = nio...

...> > Signed-off-by: Jason Wang <jasowang at redhat.com> > > --- > > drivers/vhost/vhost.c | 24 +++++++----------------- > > 1 file changed, 7 insertions(+), 17 deletions(-) > > > > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > > index a502f1a..a1c06e7 100644 > > --- a/drivers/vhost/vhost.c > > +++ b/drivers/vhost/vhost.c > > @@ -294,8 +294,11 @@ static void vhost_vq_meta_reset(struct vhost_dev *d) > > { > > int i; > > > > - for (i = 0; i < d->nvqs; ++i) > > + for (i =...

From: Tonghao Zhang <xiangxia.m.yue at gmail.com> This patches improve the guest receive performance. On the handle_tx side, we poll the sock receive queue at the same time. handle_rx do that in the same way. For more performance report, see patch 4. v5->v6: rebase the codes. Tonghao Zhang (4): net: vhost: lock the vqs one by one net: vhost: replace magic number of lock annotation

...headcount; -err: - vhost_discard_vq_desc(vq, headcount); - return r; -} - /* Expects to be always run from workqueue - which acts as * read-size critical section for our kind of RCU. */ static void handle_rx(struct vhost_net *net) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a502f1a..8814e5b 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -2104,6 +2104,84 @@ int vhost_get_vq_desc(struct vhost_virtqueue *vq, } EXPORT_SYMBOL_GPL(vhost_get_vq_desc); +/* This is a multi-buffer version of vhost_get_desc, that works if + * vq has read descriptors only. + * @vq...

...& ~VHOST_NET_BACKEND_FEATURES) > + return -EOPNOTSUPP; > + return vhost_net_set_backend_features(n, features); > case VHOST_RESET_OWNER: > return vhost_net_reset_owner(n); > case VHOST_SET_OWNER: > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index a502f1a..6f6c42d 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -315,6 +315,7 @@ static void vhost_vq_reset(struct vhost_dev *dev, > vq->log_addr = -1ull; > vq->private_data = NULL; > vq->acked_features = 0; > + vq->acked_backend_features = 0;...

...return -EFAULT; + if (features & ~VHOST_NET_BACKEND_FEATURES) + return -EOPNOTSUPP; + return vhost_net_set_backend_features(n, features); case VHOST_RESET_OWNER: return vhost_net_reset_owner(n); case VHOST_SET_OWNER: diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a502f1a..6f6c42d 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -315,6 +315,7 @@ static void vhost_vq_reset(struct vhost_dev *dev, vq->log_addr = -1ull; vq->private_data = NULL; vq->acked_features = 0; + vq->acked_backend_features = 0; vq->log_base = NULL; vq-&gt...

From: Tonghao Zhang <xiangxia.m.yue at gmail.com> This patches improve the guest receive performance. On the handle_tx side, we poll the sock receive queue at the same time. handle_rx do that in the same way. For more performance report, see patch 4, 5, 6 Tonghao Zhang (6): net: vhost: lock the vqs one by one net: vhost: replace magic number of lock annotation net: vhost: factor out

From: Tonghao Zhang <xiangxia.m.yue at gmail.com> This patches improve the guest receive performance. On the handle_tx side, we poll the sock receive queue at the same time. handle_rx do that in the same way. For more performance report, see patch 4, 5, 6 Tonghao Zhang (6): net: vhost: lock the vqs one by one net: vhost: replace magic number of lock annotation net: vhost: factor out

From: Tonghao Zhang <xiangxia.m.yue at gmail.com> This patches improve the guest receive performance. On the handle_tx side, we poll the sock receive queue at the same time. handle_rx do that in the same way. For more performance report, see patch 4. v6->v7: fix issue and rebase codes: 1. on tx, busypoll will vhost_net_disable/enable_vq rx vq. [This is suggested by Toshiaki Makita

Hi all: This series implements packed virtqueues. The code were tested with Tiwei's guest driver series at https://patchwork.ozlabs.org/cover/942297/ Pktgen test for both RX and TX does not show obvious difference with split virtqueues. The main bottleneck is the guest Linux driver, since it can not stress vhost for a 100% CPU utilization. A full TCP benchmark is ongoing. Will test

Hi all: This series implements packed virtqueues. The code were tested with Tiwei's guest driver series at https://patchwork.ozlabs.org/cover/942297/ Pktgen test for both RX and TX does not show obvious difference with split virtqueues. The main bottleneck is the guest Linux driver, since it can not stress vhost for a 100% CPU utilization. A full TCP benchmark is ongoing. Will test

Hi all: This series implements packed virtqueues. The code were tested with Tiwei's RFC V6 at https://lkml.org/lkml/2018/6/5/120. Pktgen test for both RX and TX does not show obvious difference with split virtqueues. The main bottleneck is the guest Linux driver, since it can not stress vhost for a 100% CPU utilization. A full TCP benchmark is ongoing. Will test virtio-net pmd as well when

Hi all: This series implements packed virtqueues. The code were tested with Tiwei's RFC V6 at https://lkml.org/lkml/2018/6/5/120. Pktgen test for both RX and TX does not show obvious difference with split virtqueues. The main bottleneck is the guest Linux driver, since it can not stress vhost for a 100% CPU utilization. A full TCP benchmark is ongoing. Will test virtio-net pmd as well when