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...t's a mistake: alignment should clearly be the same for virtual and physical addresses, Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index eec2f11..080422f 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -819,7 +819,7 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) BUILD_BUG_ON(__alignof__ *vq->used > VRING_USED_ALIGN_SIZE); if ((a.avail_user_addr & (VRING_AVAIL_ALIGN_SIZE - 1)) |...

...t's a mistake: alignment should clearly be the same for virtual and physical addresses, Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index eec2f11..080422f 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -819,7 +819,7 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) BUILD_BUG_ON(__alignof__ *vq->used > VRING_USED_ALIGN_SIZE); if ((a.avail_user_addr & (VRING_AVAIL_ALIGN_SIZE - 1)) |...

...give a hint for whether or not there's a work queued in the work list. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 6 ++++++ drivers/vhost/vhost.h | 1 + 2 files changed, 7 insertions(+) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index eec2f11..d42d11e 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -245,6 +245,12 @@ void vhost_work_queue(struct vhost_dev *dev, struct vhost_work *work) } EXPORT_SYMBOL_GPL(vhost_work_queue); +bool vhost_has_work(struct vhost_dev *dev) +{ + return !list_empty(&dev->work_list);...

...give a hint for whether or not there's a work queued in the work list. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 6 ++++++ drivers/vhost/vhost.h | 1 + 2 files changed, 7 insertions(+) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index eec2f11..d42d11e 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -245,6 +245,12 @@ void vhost_work_queue(struct vhost_dev *dev, struct vhost_work *work) } EXPORT_SYMBOL_GPL(vhost_work_queue); +bool vhost_has_work(struct vhost_dev *dev) +{ + return !list_empty(&dev->work_list);...

...work queued in the work list. > > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.c | 6 ++++++ > drivers/vhost/vhost.h | 1 + > 2 files changed, 7 insertions(+) > > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index eec2f11..d42d11e 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -245,6 +245,12 @@ void vhost_work_queue(struct vhost_dev *dev, struct vhost_work *work) > } > EXPORT_SYMBOL_GPL(vhost_work_queue); > > +bool vhost_has_work(struct vhost_dev *dev) > +{ > +...

...mp;n->dev, ioctl, argp); if (r == -ENOIOCTLCMD) r = vhost_vring_ioctl(&n->dev, ioctl, argp); - else + else if (ioctl != VHOST_UPDATE_IOTLB) vhost_net_flush(n); mutex_unlock(&n->dev.mutex); return r; diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index eec2f11..729fe05 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -113,6 +113,11 @@ static void vhost_init_is_le(struct vhost_virtqueue *vq) } #endif /* CONFIG_VHOST_CROSS_ENDIAN_LEGACY */ +static inline int vhost_iotlb_hash(u64 iova) +{ + return (iova >> PAGE_SHIFT) & (VHOST...

...mp;n->dev, ioctl, argp); if (r == -ENOIOCTLCMD) r = vhost_vring_ioctl(&n->dev, ioctl, argp); - else + else if (ioctl != VHOST_UPDATE_IOTLB) vhost_net_flush(n); mutex_unlock(&n->dev.mutex); return r; diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index eec2f11..729fe05 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -113,6 +113,11 @@ static void vhost_init_is_le(struct vhost_virtqueue *vq) } #endif /* CONFIG_VHOST_CROSS_ENDIAN_LEGACY */ +static inline int vhost_iotlb_hash(u64 iova) +{ + return (iova >> PAGE_SHIFT) & (VHOST...

...-ENOIOCTLCMD) > r = vhost_vring_ioctl(&n->dev, ioctl, argp); > - else > + else if (ioctl != VHOST_UPDATE_IOTLB) > vhost_net_flush(n); > mutex_unlock(&n->dev.mutex); > return r; > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index eec2f11..729fe05 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -113,6 +113,11 @@ static void vhost_init_is_le(struct vhost_virtqueue *vq) > } > #endif /* CONFIG_VHOST_CROSS_ENDIAN_LEGACY */ > > +static inline int vhost_iotlb_hash(u64 iova) > +{ > + r...

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified through module parameter. Test were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified through module parameter. Test were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected ixgbe

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected ixgbe