similar to: [PATCH 1/2] vhost_net: correct error hanlding in vhost_net_set_backend()

After commit 2b8b328b61c799957a456a5a8dab8cc7dea68575 (vhost_net: handle polling errors when setting backend), we in fact track the polling state through poll->wqh, so there's no need to duplicate the work with an extra vhost_net_polling_state. So this patch removes this and make the code simpler. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c | 60

After commit 2b8b328b61c799957a456a5a8dab8cc7dea68575 (vhost_net: handle polling errors when setting backend), we in fact track the polling state through poll->wqh, so there's no need to duplicate the work with an extra vhost_net_polling_state. So this patch removes this and make the code simpler. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c | 60

This is an update version of last version to fix the handling of polling errors in vhost/vhost_net. Currently, vhost and vhost_net ignore polling errors which can lead kernel crashing when it tries to remove itself from waitqueue after the polling failure. Fix this by checking the poll->wqh before the removing and report an error when meet polling errors. Changes from v2: - check poll->wqh

This is an update version of last version to fix the handling of polling errors in vhost/vhost_net. Currently, vhost and vhost_net ignore polling errors which can lead kernel crashing when it tries to remove itself from waitqueue after the polling failure. Fix this by checking the poll->wqh before the removing and report an error when meet polling errors. Changes from v2: - check poll->wqh

After commit 2b8b328b61c799957a456a5a8dab8cc7dea68575 (vhost_net: handle polling errors when setting backend), we in fact track the polling state through poll->wqh, so there's no need to duplicate the work with an extra vhost_net_polling_state. So this patch removes this and make the code simpler. This patch also removes the all tx starting/stopping code in tx path according to

After commit 2b8b328b61c799957a456a5a8dab8cc7dea68575 (vhost_net: handle polling errors when setting backend), we in fact track the polling state through poll->wqh, so there's no need to duplicate the work with an extra vhost_net_polling_state. So this patch removes this and make the code simpler. This patch also removes the all tx starting/stopping code in tx path according to

This patch series resurrects the earlier multiple TX/RX queues functionality for virtio_net, and addresses the issues pointed out. It also includes an API to share irq's, f.e. amongst the TX vqs. I plan to run TCP/UDP STREAM and RR tests for local->host and local->remote, and send the results in the next couple of days. patch #1: Introduce VIRTIO_NET_F_MULTIQUEUE patch #2: Move

This patch series resurrects the earlier multiple TX/RX queues functionality for virtio_net, and addresses the issues pointed out. It also includes an API to share irq's, f.e. amongst the TX vqs. I plan to run TCP/UDP STREAM and RR tests for local->host and local->remote, and send the results in the next couple of days. patch #1: Introduce VIRTIO_NET_F_MULTIQUEUE patch #2: Move

What it is: vhost net is a character device that can be used to reduce the number of system calls involved in virtio networking. Existing virtio net code is used in the guest without modification. There's similarity with vringfd, with some differences and reduced scope - uses eventfd for signalling - structures can be moved around in memory at any time (good for migration, bug work-arounds

What it is: vhost net is a character device that can be used to reduce the number of system calls involved in virtio networking. Existing virtio net code is used in the guest without modification. There's similarity with vringfd, with some differences and reduced scope - uses eventfd for signalling - structures can be moved around in memory at any time (good for migration, bug work-arounds

Asias He (3): vhost: Remove vhost_enable_zcopy in vhost.h vhost: Move VHOST_NET_FEATURES to net.c vhost: Make vhost a separate module drivers/vhost/Kconfig | 8 ++++++++ drivers/vhost/Makefile | 3 ++- drivers/vhost/net.c | 6 ++++++ drivers/vhost/scsi.c | 1 - drivers/vhost/vhost.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++- drivers/vhost/vhost.h | 8 ++------ 6

Asias He (3): vhost: Remove vhost_enable_zcopy in vhost.h vhost: Move VHOST_NET_FEATURES to net.c vhost: Make vhost a separate module drivers/vhost/Kconfig | 8 ++++++++ drivers/vhost/Makefile | 3 ++- drivers/vhost/net.c | 6 ++++++ drivers/vhost/scsi.c | 1 - drivers/vhost/vhost.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++- drivers/vhost/vhost.h | 8 ++------ 6

Changes in v6: - Allow device specific fields per vq - Track cmd per vq - Do not track evt - Switch to static array for inflight allocation, completely get rid of the pain to handle inflight allocation failure. Asias He (2): vhost: Allow device specific fields per vq tcm_vhost: Wait for pending requests in vhost_scsi_flush() drivers/vhost/net.c | 60 +++++++++++--------

Changes in v6: - Allow device specific fields per vq - Track cmd per vq - Do not track evt - Switch to static array for inflight allocation, completely get rid of the pain to handle inflight allocation failure. Asias He (2): vhost: Allow device specific fields per vq tcm_vhost: Wait for pending requests in vhost_scsi_flush() drivers/vhost/net.c | 60 +++++++++++--------

Hi: This series tries to optimize vhost_net polling at two points: - Stop rx polling for reduicng the unnecessary wakeups during handle_rx(). - Conditonally enable tx polling for reducing the unnecessary traversing and spinlock touching. Test shows about 17% improvement on rx pps. Please review Changes from V1: - use vhost_net_disable_vq()/vhost_net_enable_vq() instead of open coding. -

Hi: This series tries to optimize vhost_net polling at two points: - Stop rx polling for reduicng the unnecessary wakeups during handle_rx(). - Conditonally enable tx polling for reducing the unnecessary traversing and spinlock touching. Test shows about 17% improvement on rx pps. Please review Changes from V1: - use vhost_net_disable_vq()/vhost_net_enable_vq() instead of open coding. -

On Mon, May 06, 2013 at 08:10:03PM +0800, Asias He wrote: > On Mon, May 06, 2013 at 01:03:42PM +0300, Michael S. Tsirkin wrote: > > On Mon, May 06, 2013 at 04:38:21PM +0800, Asias He wrote: > > > Currently, vhost-net and vhost-scsi are sharing the vhost core code. > > > However, vhost-scsi shares the code by including the vhost.c file > > > directly. > >

On Mon, May 06, 2013 at 08:10:03PM +0800, Asias He wrote: > On Mon, May 06, 2013 at 01:03:42PM +0300, Michael S. Tsirkin wrote: > > On Mon, May 06, 2013 at 04:38:21PM +0800, Asias He wrote: > > > Currently, vhost-net and vhost-scsi are sharing the vhost core code. > > > However, vhost-scsi shares the code by including the vhost.c file > > > directly. > >

What it is: vhost net is a character device that can be used to reduce the number of system calls involved in virtio networking. Existing virtio net code is used in the guest without modification. There's similarity with vringfd, with some differences and reduced scope - uses eventfd for signalling - structures can be moved around in memory at any time (good for migration) - support memory

What it is: vhost net is a character device that can be used to reduce the number of system calls involved in virtio networking. Existing virtio net code is used in the guest without modification. There's similarity with vringfd, with some differences and reduced scope - uses eventfd for signalling - structures can be moved around in memory at any time (good for migration) - support memory