similar to: [PATCH] vhost: set dirty log when updating flags of used ring

This patch move the used ring initialization after backend was set. This make us possible to disable the backend and tweak the used ring then restart. And it's also useful for log setting as used ring have been checked then. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c | 4 ++++ drivers/vhost/vhost.c | 11 +++-------- drivers/vhost/vhost.h | 1 +

This patch move the used ring initialization after backend was set. This make us possible to disable the backend and tweak the used ring then restart. And it's also useful for log setting as used ring have been checked then. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c | 4 ++++ drivers/vhost/vhost.c | 11 +++-------- drivers/vhost/vhost.h | 1 +

On Tue, May 29, 2018 at 10:10:30AM +0800, Jason Wang wrote: > This patch introduces basic support for event suppression aka driver > and device area. > > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.c | 191 ++++++++++++++++++++++++++++++++++++--- > drivers/vhost/vhost.h | 10 +- >

On Tue, May 29, 2018 at 10:10:30AM +0800, Jason Wang wrote: > This patch introduces basic support for event suppression aka driver > and device area. > > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.c | 191 ++++++++++++++++++++++++++++++++++++--- > drivers/vhost/vhost.h | 10 +- >

Refactor code to make sure features are only accessed under VQ mutex. This makes everything simpler, no need for RCU here anymore. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- This is on top of the recent pull request that I sent. drivers/vhost/vhost.h | 11 +++-------- drivers/vhost/net.c | 8 +++----- drivers/vhost/scsi.c | 22 +++++++++++++---------

Refactor code to make sure features are only accessed under VQ mutex. This makes everything simpler, no need for RCU here anymore. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- This is on top of the recent pull request that I sent. drivers/vhost/vhost.h | 11 +++-------- drivers/vhost/net.c | 8 +++----- drivers/vhost/scsi.c | 22 +++++++++++++---------

Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.c | 93 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 56 insertions(+), 37 deletions(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index c90f437..4d379ed 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -33,8 +33,8 @@ enum { VHOST_MEMORY_F_LOG = 0x1, };

Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.c | 93 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 56 insertions(+), 37 deletions(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index c90f437..4d379ed 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -33,8 +33,8 @@ enum { VHOST_MEMORY_F_LOG = 0x1, };

This patch introduces support for event suppression. This is done by have a two areas: device area and driver area. One side could then try to disable or enable (delayed) notification from other side by using a boolean hint or event index interface in the areas. For more information, please refer Virtio spec. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c |

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

This patch introduces basic support for event suppression aka driver and device area. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 191 ++++++++++++++++++++++++++++++++++++--- drivers/vhost/vhost.h | 10 +- include/uapi/linux/virtio_ring.h | 19 ++++ 3 files changed, 204 insertions(+), 16 deletions(-) diff --git

This patch introduces basic support for event suppression aka driver and device area. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 168 ++++++++++++++++++++++++++++++++++++--- drivers/vhost/vhost.h | 10 ++- include/uapi/linux/virtio_ring.h | 19 +++++ 3 files changed, 182 insertions(+), 15 deletions(-) diff --git

This patch introduces basic support for event suppression aka driver and device area. Compile tested only. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 169 ++++++++++++++++++++++++++++++++++++--- drivers/vhost/vhost.h | 10 ++- include/uapi/linux/virtio_ring.h | 19 +++++ 3 files changed, 183 insertions(+), 15 deletions(-) diff

Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.c | 93 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 56 insertions(+), 37 deletions(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index c90f437..4d379ed 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -33,8 +33,8 @@ enum { VHOST_MEMORY_F_LOG = 0x1, };

Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/vhost.c | 93 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 56 insertions(+), 37 deletions(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index c90f437..4d379ed 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -33,8 +33,8 @@ enum { VHOST_MEMORY_F_LOG = 0x1, };

On Mon, Mar 26, 2018 at 11:38:53AM +0800, Jason Wang wrote: > This patch introduces basic support for event suppression aka driver > and device area. Compile tested only. > > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- [...] > + > +static bool vhost_notify_packed(struct vhost_dev *dev, > + struct vhost_virtqueue *vq) > +{ > + __virtio16

OK, here is the large patchset that implements the virtio spec update that I sent earlier (the spec itself needs a minor update, will send that out too next week, but I think we are on the same page here already). It supercedes the PUBLISH_USED_IDX patches I sent out earlier. What will follow will be a patchset that actually includes 4 sets of patches. I note below their status. Please consider

OK, here is the large patchset that implements the virtio spec update that I sent earlier (the spec itself needs a minor update, will send that out too next week, but I think we are on the same page here already). It supercedes the PUBLISH_USED_IDX patches I sent out earlier. What will follow will be a patchset that actually includes 4 sets of patches. I note below their status. Please consider

On Tue, Jul 03, 2018 at 01:38:04PM +0800, Jason Wang wrote: > This patch introduces support for event suppression. This is done by > have a two areas: device area and driver area. One side could then try > to disable or enable (delayed) notification from other side by using a > boolean hint or event index interface in the areas. > > For more information, please refer Virtio