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...ER bit cleared or not; If cleared, reclaim descriptor(set DESC_DRIVER) and set DESC_WRAP once new available descriptor get ready to go -- Steve > -----Original Message----- > From: Michael S. Tsirkin [mailto:mst at redhat.com] > Sent: Thursday, September 28, 2017 7:49 AM > To: Steven Luong (sluong) > Cc: Liang, Cunming; virtio-dev at lists.oasis-open.org; > virtualization at lists.linux-foundation.org > Subject: Re: [virtio-dev] packed ring layout proposal v3 > > On Tue, Sep 26, 2017 at 11:38:18PM +0000, Steven Luong (sluong) wrote: > > Michael, > > > &...

...ER bit cleared or not; If cleared, reclaim descriptor(set DESC_DRIVER) and set DESC_WRAP once new available descriptor get ready to go -- Steve > -----Original Message----- > From: Michael S. Tsirkin [mailto:mst at redhat.com] > Sent: Thursday, September 28, 2017 7:49 AM > To: Steven Luong (sluong) > Cc: Liang, Cunming; virtio-dev at lists.oasis-open.org; > virtualization at lists.linux-foundation.org > Subject: Re: [virtio-dev] packed ring layout proposal v3 > > On Tue, Sep 26, 2017 at 11:38:18PM +0000, Steven Luong (sluong) wrote: > > Michael, > > > &...

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

...low bit in OWNER changes. Thus first time it writes 0x11, next time 0x0, then 0x11 again. --------------- > > -----Original Message----- > > From: Michael S. Tsirkin [mailto:mst at redhat.com] > > Sent: Thursday, September 28, 2017 7:49 AM > > To: Steven Luong (sluong) > > Cc: Liang, Cunming; virtio-dev at lists.oasis-open.org; > > virtualization at lists.linux-foundation.org > > Subject: Re: [virtio-dev] packed ring layout proposal v3 > > > > On Tue, Sep 26, 2017 at 11:38:18PM +0000, Steven Luong (sluong) wrote: > >...

?On 12/17/18, 2:55 PM, "Michael S. Tsirkin" <mst at redhat.com> wrote: On Thu, Dec 13, 2018 at 11:24:28PM +0000, Steven Luong (sluong) via Virtualization wrote: > Folks, > > > > We came across a memory race condition between VPP vhost driver and the kernel > vhost. VPP is running a tap interface over vhost backend. In this case, VPP is > acting as the vhost driver mode...

On Tue, Aug 01, 2017 at 08:54:27PM -0700, Steven Luong wrote: > * Descriptor ring: > > Guest adds descriptors with unique index values and DESC_HW set in flags. > Host overwrites used descriptors with correct len, index, and DESC_HW > clear.? Flags are always set/cleared last. > > #define DESC_HW 0x0080 >...

On Tue, Sep 26, 2017 at 11:38:18PM +0000, Steven Luong (sluong) wrote: > 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 My bad, I will need to work on it. Here is an example: L...

On Tue, Aug 01, 2017 at 08:54:27PM -0700, Steven Luong wrote: > * Descriptor ring: > > Guest adds descriptors with unique index values and DESC_HW set in flags. > Host overwrites used descriptors with correct len, index, and DESC_HW > clear.? Flags are always set/cleared last. > > #define DESC_HW 0x0080 >...

Installing DevkitLite hardware (Very similar to John Lange's post on Tue Oct 08 2002) I cannot get anything to work on the phone connected to the s100u. I dont know what to do. Can someone please help me? I used the sample configuration files from digium documentaion that was supposed to be "sane" defaults for the kit. Very similar to John Lange's post on Tue Oct 08 2002 Here

Folks, We came across a memory race condition between VPP vhost driver and the kernel vhost. VPP is running a tap interface over vhost backend. In this case, VPP is acting as the vhost driver mode and the kernel vhost is acting as the vhost device mode. In the kernel vhost?s TX traffic direction which is VPP?s RX traffic direction, kernel vhost is the producer and VPP is the consumer. Kernel

Folks, We came across a memory race condition between VPP vhost driver and the kernel vhost. VPP is running a tap interface over vhost backend. In this case, VPP is acting as the vhost driver mode and the kernel vhost is acting as the vhost device mode. In the kernel vhost?s TX traffic direction which is VPP?s RX traffic direction, kernel vhost is the producer and VPP is the consumer. Kernel

On Thu, Dec 13, 2018 at 11:24:28PM +0000, Steven Luong (sluong) via Virtualization wrote: > Folks, > > > > We came across a memory race condition between VPP vhost driver and the kernel > vhost. VPP is running a tap interface over vhost backend. In this case, VPP is > acting as the vhost driver mode and the kernel vhost is acti...

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

...---- > 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 lists.oasis-open.org; > virtualization at lists.linux-foundation.org > Subject: Re: [virtio-dev] packed ring layout proposal v3 > > On Wed, Oct 04, 2017 at 02:39:01PM +0200, Jens Freimann wrote: > > On Sun, Oct 01, 2017 at...

...---- > 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 lists.oasis-open.org; > virtualization at lists.linux-foundation.org > Subject: Re: [virtio-dev] packed ring layout proposal v3 > > On Wed, Oct 04, 2017 at 02:39:01PM +0200, Jens Freimann wrote: > > On Sun, Oct 01, 2017 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 |