search for: 71c7a46

...3 > > +#define VIRTIO_F_RING_PACKED 34 It's better to add some comments for this macro. > + > /* > * Does the device support Single Root I/O Virtualization? > */ > diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h > index 6d5d5fa..71c7a46 100644 > --- a/include/uapi/linux/virtio_ring.h > +++ b/include/uapi/linux/virtio_ring.h > @@ -43,6 +43,8 @@ > #define VRING_DESC_F_WRITE 2 > /* This means the buffer contains a list of buffer descriptors. */ > #define VRING_DESC_F_INDIRECT 4 > +#define VRING_DESC_F_AVAIL...

...b/include/uapi/linux/virtio_config.h @@ -75,6 +75,8 @@ */ #define VIRTIO_F_IOMMU_PLATFORM 33 +#define VIRTIO_F_RING_PACKED 34 + /* * Does the device support Single Root I/O Virtualization? */ diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h index 6d5d5fa..71c7a46 100644 --- a/include/uapi/linux/virtio_ring.h +++ b/include/uapi/linux/virtio_ring.h @@ -43,6 +43,8 @@ #define VRING_DESC_F_WRITE 2 /* This means the buffer contains a list of buffer descriptors. */ #define VRING_DESC_F_INDIRECT 4 +#define VRING_DESC_F_AVAIL 7 +#define VRING_DESC_F_USED 15...

On 2018?07?05? 04:15, Maxime Coquelin wrote: > > > On 07/03/2018 07:38 AM, Jason Wang wrote: >> diff --git a/include/uapi/linux/virtio_ring.h >> b/include/uapi/linux/virtio_ring.h >> index 6d5d5fa..71c7a46 100644 >> --- a/include/uapi/linux/virtio_ring.h >> +++ b/include/uapi/linux/virtio_ring.h >> @@ -43,6 +43,8 @@ >> ? #define VRING_DESC_F_WRITE??? 2 >> ? /* This means the buffer contains a list of buffer descriptors. */ >> ? #define VRING_DESC_F_INDIRECT??? 4 &g...

...uct vring_used __user *used; + struct vring_packed_desc_event __user *device_event; + }; const struct vhost_umem_node *meta_iotlb[VHOST_NUM_ADDRS]; struct file *kick; struct eventfd_ctx *call_ctx; diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h index e297580..71c7a46 100644 --- a/include/uapi/linux/virtio_ring.h +++ b/include/uapi/linux/virtio_ring.h @@ -75,6 +75,25 @@ struct vring_desc_packed { __virtio16 flags; }; +/* Enable events */ +#define RING_EVENT_FLAGS_ENABLE 0x0 +/* Disable events */ +#define RING_EVENT_FLAGS_DISABLE 0x1 +/* + * Enable events fo...

...struct vring_packed_desc_event __user *device_event; > + }; > const struct vhost_umem_node *meta_iotlb[VHOST_NUM_ADDRS]; > struct file *kick; > struct eventfd_ctx *call_ctx; > diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h > index e297580..71c7a46 100644 > --- a/include/uapi/linux/virtio_ring.h > +++ b/include/uapi/linux/virtio_ring.h > @@ -75,6 +75,25 @@ struct vring_desc_packed { > __virtio16 flags; > }; > > +/* Enable events */ > +#define RING_EVENT_FLAGS_ENABLE 0x0 > +/* Disable events */ > +#define RIN...

...struct vring_packed_desc_event __user *device_event; > + }; > const struct vhost_umem_node *meta_iotlb[VHOST_NUM_ADDRS]; > struct file *kick; > struct eventfd_ctx *call_ctx; > diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h > index e297580..71c7a46 100644 > --- a/include/uapi/linux/virtio_ring.h > +++ b/include/uapi/linux/virtio_ring.h > @@ -75,6 +75,25 @@ struct vring_desc_packed { > __virtio16 flags; > }; > > +/* Enable events */ > +#define RING_EVENT_FLAGS_ENABLE 0x0 > +/* Disable events */ > +#define RIN...

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

Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V5 at https://lkml.org/lkml/2018/5/22/138. Some fixups and tweaks were needed on top of Tiwei's code to make it run for event index. Pktgen reports about 20% improvement on TX PPS when doing pktgen from guest to host. No ovbious improvement on RX PPS. We can do lots of optimizations on top but for simple