similar to: packed ring layout proposal v2

On Wed, Sep 20, 2017 at 09:11:57AM +0000, Liang, Cunming wrote: > Hi Michael, > > > -----Original Message----- > > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > > On Behalf Of Michael S. Tsirkin > > Sent: Sunday, September 10, 2017 1:06 PM > > To: virtio-dev at lists.oasis-open.org > > Cc: virtualization at

On Wed, Sep 20, 2017 at 09:11:57AM +0000, Liang, Cunming wrote: > Hi Michael, > > > -----Original Message----- > > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > > On Behalf Of Michael S. Tsirkin > > Sent: Sunday, September 10, 2017 1:06 PM > > To: virtio-dev at lists.oasis-open.org > > Cc: virtualization at

On Sun, Oct 01, 2017 at 04:08:29AM +0000, Michael S. Tsirkin wrote: >On Thu, Sep 28, 2017 at 09:44:35AM +0000, Liang, Cunming wrote: >> >> Get it now. Please correct me if I missing something. >> >> >> Flags status hints, >> >> - DESC_DRIVER only: driver owns the descriptor w/o available info ready for device to use >> >> - DESC_DRIVER |

On Sun, Oct 01, 2017 at 04:08:29AM +0000, Michael S. Tsirkin wrote: >On Thu, Sep 28, 2017 at 09:44:35AM +0000, Liang, Cunming wrote: >> >> Get it now. Please correct me if I missing something. >> >> >> Flags status hints, >> >> - DESC_DRIVER only: driver owns the descriptor w/o available info ready for device to use >> >> - DESC_DRIVER |

Michael, Would you please give an example or two how these two flags DESC_DRIVER and DESC_WRAP are used together? Like others, I am confused by the description and still don?t quite grok it. Steven On 9/25/17, 3:24 PM, "virtio-dev at lists.oasis-open.org on behalf of Michael S. Tsirkin" <virtio-dev at lists.oasis-open.org on behalf of mst at redhat.com> wrote: On Wed, Sep

Get it now. Please correct me if I missing something. Flags status hints, - DESC_DRIVER only: driver owns the descriptor w/o available info ready for device to use - DESC_DRIVER | DESC_WRAP: driver has prepared an available descriptor, device hasn't used it yet - None: device has used the descriptor, and write descriptor out - DESC_WRAP only: shall not happen, device make sure to clear

Get it now. Please correct me if I missing something. Flags status hints, - DESC_DRIVER only: driver owns the descriptor w/o available info ready for device to use - DESC_DRIVER | DESC_WRAP: driver has prepared an available descriptor, device hasn't used it yet - None: device has used the descriptor, and write descriptor out - DESC_WRAP only: shall not happen, device make sure to clear

> -----Original Message----- > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > On Behalf Of Michael S. Tsirkin > Sent: Wednesday, October 4, 2017 8:58 PM > To: Jens Freimann <jfreimann at redhat.com> > Cc: Liang, Cunming <cunming.liang at intel.com>; Steven Luong (sluong) > <sluong at cisco.com>; virtio-dev at

> -----Original Message----- > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > On Behalf Of Michael S. Tsirkin > Sent: Wednesday, October 4, 2017 8:58 PM > To: Jens Freimann <jfreimann at redhat.com> > Cc: Liang, Cunming <cunming.liang at intel.com>; Steven Luong (sluong) > <sluong at cisco.com>; virtio-dev at

> -----Original Message----- > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > On Behalf Of Michael S. Tsirkin > Sent: Wednesday, February 08, 2017 5:20 AM > To: virtio-dev at lists.oasis-open.org > Cc: virtualization at lists.linux-foundation.org > Subject: [virtio-dev] packed ring layout proposal v2 > > This is an update from v1

> -----Original Message----- > From: Michael S. Tsirkin [mailto:mst at redhat.com] > Sent: Tuesday, July 18, 2017 7:23 PM > To: Lior Narkis <liorn at mellanox.com> > Cc: virtio-dev at lists.oasis-open.org; virtualization at lists.linux-foundation.org > Subject: Re: [virtio-dev] packed ring layout proposal v2 > > On Sun, Jul 16, 2017 at 06:00:45AM +0000, Lior Narkis

> -----Original Message----- > From: Michael S. Tsirkin [mailto:mst at redhat.com] > Sent: Tuesday, July 18, 2017 7:23 PM > To: Lior Narkis <liorn at mellanox.com> > Cc: virtio-dev at lists.oasis-open.org; virtualization at lists.linux-foundation.org > Subject: Re: [virtio-dev] packed ring layout proposal v2 > > On Sun, Jul 16, 2017 at 06:00:45AM +0000, Lior Narkis

On 2017?09?10? 13:06, Michael S. Tsirkin wrote: > This is an update from v2 version. > Changes: > - update event suppression mechanism > - add wrap counter: DESC_WRAP flag in addition to > DESC_DRIVER flag used for validity so device does not have to > write out all used descriptors. Do we have benchmark result to show the advantage of DESC_DRIVER over e.g avail/used

On Mon, Sep 11, 2017 at 3:47 AM, Jason Wang <jasowang at redhat.com> wrote: > > > On 2017?09?10? 13:06, Michael S. Tsirkin wrote: >> >> This is an update from v2 version. >> Changes: >> - update event suppression mechanism >> - add wrap counter: DESC_WRAP flag in addition to >> DESC_DRIVER flag used for validity so device does not have to

On Mon, Sep 11, 2017 at 3:47 AM, Jason Wang <jasowang at redhat.com> wrote: > > > On 2017?09?10? 13:06, Michael S. Tsirkin wrote: >> >> This is an update from v2 version. >> Changes: >> - update event suppression mechanism >> - add wrap counter: DESC_WRAP flag in addition to >> DESC_DRIVER flag used for validity so device does not have to

On Tue, Feb 28, 2017 at 01:02:18PM +0800, Yuanhan Liu wrote: > On Wed, Feb 08, 2017 at 05:20:14AM +0200, Michael S. Tsirkin wrote: > > This is an update from v1 version. > > Changes: > > - update event suppression mechanism > > - separate options for indirect and direct s/g > > - lots of new features > > > > --- > > > > Performance

On Tue, Feb 28, 2017 at 01:02:18PM +0800, Yuanhan Liu wrote: > On Wed, Feb 08, 2017 at 05:20:14AM +0200, Michael S. Tsirkin wrote: > > This is an update from v1 version. > > Changes: > > - update event suppression mechanism > > - separate options for indirect and direct s/g > > - lots of new features > > > > --- > > > > Performance

Hi Michael, > -----Original Message----- > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > On Behalf Of Michael S. Tsirkin > Sent: Sunday, September 10, 2017 1:06 PM > To: virtio-dev at lists.oasis-open.org > Cc: virtualization at lists.linux-foundation.org > Subject: [virtio-dev] packed ring layout proposal v3 > [...] > *

Hi all: This RFC implement a subset of packed ring which was described at https://github.com/oasis-tcs/virtio-docs/blob/master/virtio-v1.1-packed-wd07.pdf . 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

Hi all: This RFC implement a subset of packed ring which was described at https://github.com/oasis-tcs/virtio-docs/blob/master/virtio-v1.1-packed-wd07.pdf . 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