search for: device_ev

...ok_packed(struct vhost_virtqueue *vq, unsigned int num, struct vring_used __user *used) { struct vring_desc_packed *packed = (struct vring_desc_packed *)desc; + struct vring_packed_desc_event *driver_event = + (struct vring_packed_desc_event *)avail; + struct vring_packed_desc_event *device_event = + (struct vring_packed_desc_event *)used; - /* TODO: check device area and driver area */ return access_ok(VERIFY_READ, packed, num * sizeof(*packed)) && - access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)); + access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)...

...ok_packed(struct vhost_virtqueue *vq, unsigned int num, struct vring_used __user *used) { struct vring_desc_packed *packed = (struct vring_desc_packed *)desc; + struct vring_packed_desc_event *driver_event = + (struct vring_packed_desc_event *)avail; + struct vring_packed_desc_event *device_event = + (struct vring_packed_desc_event *)used; - /* FIXME: check device area and driver area */ return access_ok(VERIFY_READ, packed, num * sizeof(*packed)) && - access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)); + access_ok(VERIFY_WRITE, packed, num * sizeof(*packed...

...ue *vq, unsigned int num, > struct vring_used __user *used) > { > struct vring_desc_packed *packed = (struct vring_desc_packed *)desc; > + struct vring_packed_desc_event *driver_event = > + (struct vring_packed_desc_event *)avail; > + struct vring_packed_desc_event *device_event = > + (struct vring_packed_desc_event *)used; > > - /* FIXME: check device area and driver area */ > return access_ok(VERIFY_READ, packed, num * sizeof(*packed)) && > - access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)); > + access_ok(VERIFY_WRITE...

...ue *vq, unsigned int num, > struct vring_used __user *used) > { > struct vring_desc_packed *packed = (struct vring_desc_packed *)desc; > + struct vring_packed_desc_event *driver_event = > + (struct vring_packed_desc_event *)avail; > + struct vring_packed_desc_event *device_event = > + (struct vring_packed_desc_event *)used; > > - /* FIXME: check device area and driver area */ > return access_ok(VERIFY_READ, packed, num * sizeof(*packed)) && > - access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)); > + access_ok(VERIFY_WRITE...

...ue *vq, unsigned int num, > struct vring_used __user *used) > { > struct vring_desc_packed *packed = (struct vring_desc_packed *)desc; > + struct vring_packed_desc_event *driver_event = > + (struct vring_packed_desc_event *)avail; > + struct vring_packed_desc_event *device_event = > + (struct vring_packed_desc_event *)used; > > - /* TODO: check device area and driver area */ > return access_ok(VERIFY_READ, packed, num * sizeof(*packed)) && > - access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)); > + access_ok(VERIFY_WRITE,...

...ue *vq, unsigned int num, > struct vring_used __user *used) > { > struct vring_desc_packed *packed = (struct vring_desc_packed *)desc; > + struct vring_packed_desc_event *driver_event = > + (struct vring_packed_desc_event *)avail; > + struct vring_packed_desc_event *device_event = > + (struct vring_packed_desc_event *)used; > > - /* TODO: check device area and driver area */ > return access_ok(VERIFY_READ, packed, num * sizeof(*packed)) && > - access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)); > + access_ok(VERIFY_WRITE,...

...ok_packed(struct vhost_virtqueue *vq, unsigned int num, struct vring_used __user *used) { struct vring_desc_packed *packed = (struct vring_desc_packed *)desc; + struct vring_packed_desc_event *driver_event = + (struct vring_packed_desc_event *)avail; + struct vring_packed_desc_event *device_event = + (struct vring_packed_desc_event *)used; - /* FIXME: check device area and driver area */ return access_ok(VERIFY_READ, packed, num * sizeof(*packed)) && - access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)); + access_ok(VERIFY_WRITE, packed, num * sizeof(*packed...

...ok_packed(struct vhost_virtqueue *vq, unsigned int num, struct vring_used __user *used) { struct vring_desc_packed *packed = (struct vring_desc_packed *)desc; + struct vring_packed_desc_event *driver_event = + (struct vring_packed_desc_event *)avail; + struct vring_packed_desc_event *device_event = + (struct vring_packed_desc_event *)used; - /* FIXME: check device area and driver area */ return access_ok(VERIFY_READ, packed, num * sizeof(*packed)) && - access_ok(VERIFY_WRITE, packed, num * sizeof(*packed)); + access_ok(VERIFY_WRITE, packed, num * sizeof(*packed...

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

...alse; > + vq->used_flags &= ~VRING_USED_F_NO_NOTIFY; > + > + flags = cpu_to_vhost16(vq, RING_EVENT_FLAGS_ENABLE); > + ret = vhost_update_device_flags(vq, flags); > + if (ret) { > + vq_err(vq, "Failed to enable notification at %p: %d\n", > + &vq->device_event->desc_event_flags, ret); > + return false; > + } > > /* They could have slipped one in as we were doing that: make > * sure it's written, then check again. */ > @@ -2855,7 +2987,18 @@ EXPORT_SYMBOL_GPL(vhost_enable_notify); > static void vhost_disable_notify_...

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 I have downloaded the opensource xapi source code. I am not sure what the functins of the follow modules: 1 block_device_io 2 datamodel 3 xiu (I am puzzled by the name "xiu") 4 stats 5 rpc-light 6 rss 7 xb (I think the xapi needs not to talk to xenbus directly) 8 xsrpc (why it writes some "rpc" keys to path of "domain/<domid>" in the

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 RFC implement packed ring layout. The code were tested with pmd implement by Jens at http://dpdk.org/ml/archives/dev/2018-January/089417.html. Minor change was needed for pmd codes to kick virtqueue since it assumes a busy polling backend. Test were done between localhost and guest. Testpmd (rxonly) in guest reports 2.4Mpps. Testpmd (txonly) repots about 2.1Mpps. Notes: The event

Hi all: This RFC implement packed ring layout. The code were tested with pmd implement by Jens at http://dpdk.org/ml/archives/dev/2018-January/089417.html. Minor change was needed for pmd codes to kick virtqueue since it assumes a busy polling backend. Test were done between localhost and guest. Testpmd (rxonly) in guest reports 2.4Mpps. Testpmd (txonly) repots about 2.1Mpps. Notes: The event

........There has been a parameter change to the system. net_bind_add.............A new network binding has been made. net_bind_remove..........A network binding has been removed. net_bind_enable..........A network binding has been enabled. net_bind_disable.........A network binding has been disabled. device_event.............A device has generated some event. hardware_profile_change..A change has been made to the system''s hardware profile. power_event..............A power event has occured (eg change to battery power). session_change...........There has been a change in session. user_defined.......

Hi all: This series implements packed virtqueues which were described at [1]. In this version we try to address the performance regression saw by V2. The root cause is packed virtqueue need more times of userspace memory accesssing which turns out to be very expensive. Thanks to the help of 7f466032dc9e ("vhost: access vq metadata through kernel virtual address"), such overhead cold be

Hi all: This series implements packed virtqueues which were described at [1]. In this version we try to address the performance regression saw by V2. The root cause is packed virtqueue need more times of userspace memory accesssing which turns out to be very expensive. Thanks to the help of 7f466032dc9e ("vhost: access vq metadata through kernel virtual address"), such overhead cold be