On 25.04.2019 13:42, Ian Stokes wrote:
> On 4/25/2019 11:09 AM, Ilya Maximets wrote:
>> "On 24.04.2019 20:03, Ian Stokes wrote:
>>> Modify travis linux build script to use the latest
>>> DPDK stable release 18.11.1. Update docs for latest
>>> DPDK stable releases.
>>>
>>> Signed-off-by: Ian Stokes <ian.sto...@intel.com>
>>> ---
>>>   .travis/linux-build.sh                   | 2 +-
>>>   Documentation/faq/releases.rst           | 4 ++--
>>>   Documentation/intro/install/dpdk.rst     | 8 ++++----
>>>   Documentation/topics/dpdk/vhost-user.rst | 6 +++---
>>>   4 files changed, 10 insertions(+), 10 deletions(-)
>>
>> Do we need a NEWS update for this change?
>> 18.11.1 should not have any user-visible changes from the OVS
>> point of view, however upcoming 18.11.2 will have in case we'll
>> merge vhost destroy_connection related patch. The questions are:
>> Are we going to add stable release updates to NEWS?
> We can, if people think it's of use. It's now mentioned in the release notes 
> of 18.11.1 that OVS DPDK was validated, so adding an entry into NEWS for the 
> next OVS dot release could help push users to use the correct DPDK to OVS 
> release mapping. To date we still see users on xx.yy.0 LTS releases which I'd 
> like to encourage to move on.

OK. Sounds good.

> 
>> Do we need to mention stable releases that has no direct impact
>> on OVS itself?
> If it has no impact then we can just add an item into NEWS saying it's been 
> validated and is supported.

OK.

> If there is a known impact then we should detail the nature of that impact, 
> typically NEWS has an entry of 'various bug fixes' or something to that 
> effect, are you thinking we should provide specifics of the bug fix that 
> affects users as part of NEWS from now on? I don't see the harm once we are 
> aware of it.

Yes, we can do that. Another option:
* If there is no visible impact on OVS --> mention that new stable release 
validated.
* If there is some impact (feature depends on a bug fix in a new stable DPDK)
  --> bump the minimal supported DPDK version.

Like this:
NEWS:
 * DPDK:
   - OVS validated with DPDK 18.11.1 which is recommended to use.

 * DPDK:
   - DPDK 18.11.2 is a new minimal supported version.
   - DPDK 18.11.1 and lower is no longer supported.

The key point here is that we relay on bug fixes in a new stable DPDK and able
to merge new functionality/fixes that depends on them in OVS.

Thoughts?

Best regards, Ilya Maximets.
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