Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-21 Thread Yan Zhao
On Fri, Jun 19, 2020 at 04:40:46PM -0600, Alex Williamson wrote: > On Tue, 9 Jun 2020 20:37:31 -0400 > Yan Zhao wrote: > > > On Fri, Jun 05, 2020 at 03:39:50PM +0100, Dr. David Alan Gilbert wrote: > > > > > > I tried to simplify the problem a bit, but we keep going backwards. > > > > > > If > >

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-19 Thread Alex Williamson
On Tue, 9 Jun 2020 20:37:31 -0400 Yan Zhao wrote: > On Fri, Jun 05, 2020 at 03:39:50PM +0100, Dr. David Alan Gilbert wrote: > > > > > I tried to simplify the problem a bit, but we keep going backwards. > > > > > If > > > > > the requirement is that potentially any source device can migrate to

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-09 Thread Yan Zhao
On Fri, Jun 05, 2020 at 03:39:50PM +0100, Dr. David Alan Gilbert wrote: > > > > I tried to simplify the problem a bit, but we keep going backwards. If > > > > the requirement is that potentially any source device can migrate to any > > > > target device and we cannot provide any means other than w

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-05 Thread Dr. David Alan Gilbert
* Alex Williamson (alex.william...@redhat.com) wrote: > On Fri, 5 Jun 2020 11:22:24 +0100 > "Dr. David Alan Gilbert" wrote: > > > * Alex Williamson (alex.william...@redhat.com) wrote: > > > On Wed, 3 Jun 2020 01:24:43 -0400 > > > Yan Zhao wrote: > > > > > > > On Tue, Jun 02, 2020 at 09:55:28P

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-05 Thread Alex Williamson
On Fri, 5 Jun 2020 11:22:24 +0100 "Dr. David Alan Gilbert" wrote: > * Alex Williamson (alex.william...@redhat.com) wrote: > > On Wed, 3 Jun 2020 01:24:43 -0400 > > Yan Zhao wrote: > > > > > On Tue, Jun 02, 2020 at 09:55:28PM -0600, Alex Williamson wrote: > > > > On Tue, 2 Jun 2020 23:19:48

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-05 Thread Dr. David Alan Gilbert
* Alex Williamson (alex.william...@redhat.com) wrote: > On Wed, 3 Jun 2020 01:24:43 -0400 > Yan Zhao wrote: > > > On Tue, Jun 02, 2020 at 09:55:28PM -0600, Alex Williamson wrote: > > > On Tue, 2 Jun 2020 23:19:48 -0400 > > > Yan Zhao wrote: > > > > > > > On Tue, Jun 02, 2020 at 04:55:27PM -06

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-03 Thread Alex Williamson
On Wed, 3 Jun 2020 01:24:43 -0400 Yan Zhao wrote: > On Tue, Jun 02, 2020 at 09:55:28PM -0600, Alex Williamson wrote: > > On Tue, 2 Jun 2020 23:19:48 -0400 > > Yan Zhao wrote: > > > > > On Tue, Jun 02, 2020 at 04:55:27PM -0600, Alex Williamson wrote: > > > > On Wed, 29 Apr 2020 20:39:50 -040

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-02 Thread Yan Zhao
On Tue, Jun 02, 2020 at 09:55:28PM -0600, Alex Williamson wrote: > On Tue, 2 Jun 2020 23:19:48 -0400 > Yan Zhao wrote: > > > On Tue, Jun 02, 2020 at 04:55:27PM -0600, Alex Williamson wrote: > > > On Wed, 29 Apr 2020 20:39:50 -0400 > > > Yan Zhao wrote: > > > > > > > On Wed, Apr 29, 2020 at 05

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-02 Thread Alex Williamson
On Tue, 2 Jun 2020 23:19:48 -0400 Yan Zhao wrote: > On Tue, Jun 02, 2020 at 04:55:27PM -0600, Alex Williamson wrote: > > On Wed, 29 Apr 2020 20:39:50 -0400 > > Yan Zhao wrote: > > > > > On Wed, Apr 29, 2020 at 05:48:44PM +0800, Dr. David Alan Gilbert wrote: > > > > > > > > > > > > > > > >

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-02 Thread Yan Zhao
On Tue, Jun 02, 2020 at 04:55:27PM -0600, Alex Williamson wrote: > On Wed, 29 Apr 2020 20:39:50 -0400 > Yan Zhao wrote: > > > On Wed, Apr 29, 2020 at 05:48:44PM +0800, Dr. David Alan Gilbert wrote: > > > > > > > > > > > > > > > > > An mdev type is meant to define a software > > > > > > > > > >

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-06-02 Thread Alex Williamson
On Wed, 29 Apr 2020 20:39:50 -0400 Yan Zhao wrote: > On Wed, Apr 29, 2020 at 05:48:44PM +0800, Dr. David Alan Gilbert wrote: > > > > > > > > > > > > > > > An mdev type is meant to define a software > > > > > > > > > > > > > > compatible interface, so in > > > > > > > > > > > > > > the case of m

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-04-29 Thread Yan Zhao
On Wed, Apr 29, 2020 at 10:13:01PM +0800, Eric Blake wrote: > [meta-comment] > > On 4/29/20 4:35 AM, Yan Zhao wrote: > > On Wed, Apr 29, 2020 at 04:22:01PM +0800, Dr. David Alan Gilbert wrote: > [...] > > This patchset introduces a migration_version attribute > > u

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-04-29 Thread Yan Zhao
On Wed, Apr 29, 2020 at 05:48:44PM +0800, Dr. David Alan Gilbert wrote: > > > > > > > > > > > > > An mdev type is meant to define a software compatible > > > > > > > > > > > > > interface, so in > > > > > > > > > > > > > the case of mdev->mdev migration, doesn't migrating > > > > > > > > > > > >

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-04-29 Thread Eric Blake
[meta-comment] On 4/29/20 4:35 AM, Yan Zhao wrote: On Wed, Apr 29, 2020 at 04:22:01PM +0800, Dr. David Alan Gilbert wrote: [...] This patchset introduces a migration_version attribute under sysfs of VFIO Mediated devices. Hmm, several pages with up to 16 levels of quoting, with editors mak

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-04-29 Thread Dr. David Alan Gilbert
* Yan Zhao (yan.y.z...@intel.com) wrote: > On Wed, Apr 29, 2020 at 04:22:01PM +0800, Dr. David Alan Gilbert wrote: > > * Yan Zhao (yan.y.z...@intel.com) wrote: > > > On Tue, Apr 28, 2020 at 10:14:37PM +0800, Dr. David Alan Gilbert wrote: > > > > * Yan Zhao (yan.y.z...@intel.com) wrote: > > > > > On

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-04-29 Thread Yan Zhao
On Wed, Apr 29, 2020 at 04:22:01PM +0800, Dr. David Alan Gilbert wrote: > * Yan Zhao (yan.y.z...@intel.com) wrote: > > On Tue, Apr 28, 2020 at 10:14:37PM +0800, Dr. David Alan Gilbert wrote: > > > * Yan Zhao (yan.y.z...@intel.com) wrote: > > > > On Mon, Apr 27, 2020 at 11:37:43PM +0800, Dr. David A

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-04-29 Thread Dr. David Alan Gilbert
* Yan Zhao (yan.y.z...@intel.com) wrote: > On Tue, Apr 28, 2020 at 10:14:37PM +0800, Dr. David Alan Gilbert wrote: > > * Yan Zhao (yan.y.z...@intel.com) wrote: > > > On Mon, Apr 27, 2020 at 11:37:43PM +0800, Dr. David Alan Gilbert wrote: > > > > * Yan Zhao (yan.y.z...@intel.com) wrote: > > > > > On

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-04-29 Thread Yan Zhao
On Tue, Apr 28, 2020 at 10:14:37PM +0800, Dr. David Alan Gilbert wrote: > * Yan Zhao (yan.y.z...@intel.com) wrote: > > On Mon, Apr 27, 2020 at 11:37:43PM +0800, Dr. David Alan Gilbert wrote: > > > * Yan Zhao (yan.y.z...@intel.com) wrote: > > > > On Sat, Apr 25, 2020 at 03:10:49AM +0800, Dr. David A

Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration

2020-04-28 Thread Dr. David Alan Gilbert
* Yan Zhao (yan.y.z...@intel.com) wrote: > On Mon, Apr 27, 2020 at 11:37:43PM +0800, Dr. David Alan Gilbert wrote: > > * Yan Zhao (yan.y.z...@intel.com) wrote: > > > On Sat, Apr 25, 2020 at 03:10:49AM +0800, Dr. David Alan Gilbert wrote: > > > > * Yan Zhao (yan.y.z...@intel.com) wrote: > > > > > On