Suppress error warning in HotSpot backports

[David Holmes]

On 22/03/2014 3:20 AM, Andrew Hughes wrote:
> ----- Original Message -----
>> On 20/03/2014 8:01 PM, Volker Simonis wrote:
>>> On Thu, Mar 20, 2014 at 1:09 AM, Andrew Hughes <gnu.andrew at redhat.com>
>>> wrote:
>>>> ----- Original Message -----
>>>>> On Wed, Mar 19, 2014 at 9:52 AM, Andrew Dinn <adinn at redhat.com> wrote:
>>>>>> On 19/03/14 06:13, Volker Simonis wrote:
>>>>>>> On Tuesday, March 18, 2014, Andrew Haley <aph at redhat.com> wrote:
>>>>>>>> But this is Java 7.
>>>>>>>
>>>>>>>
>>>>>>> Yes, but with HS25 which makes  it behave exactly like Java 8 in this
>>>>>>> respect!
>>>>>>
>>>>>> The JVM in use for our AArch64 JDK7 is the one we built for JDK8. So,
>>>>>> strictly, it is derived from the jdk8 tree, not the HS25 tree. That
>>>>>> probably explains most clearly why it behaves like jdk8 :-)
>>>>>>
>>>>>
>>>>> That's no difference.
>>>>>
>>>>> The flow of HS changes until the jdk8 release was:
>>>>>
>>>>> hsx/hotspot-{gc,rt,comp,emb} -> hsx/hotspot-main -> hsx/hsx25 -> jdk8
>>>>>
>>>>> After the release it probably will be:
>>>>>
>>>>> hsx/hotspot-main -> jdk8u-dev -> jdk8uXX
>>>>>
>>>>> The current contents of hsx/hotspot-main/hotspot, hsx/hsx25/hotspot
>>>>> and jdk8/hotspot are all equal and contain HS 25.0-b70.
>>>>>
>>>>
>>>> Hmm.. but I thought jdk8 would *always* be hs25 now. This seems to suggest
>>>> that jdk8 is always getting the latest HotSpot development (i.e. same as 9
>>>> etc.)
>>>>
>>>
>>> You're right. The current plan is that jdk8 remains on hs25. But the
>>> hsx repositories as well. They'll be only used for collecting jdk8
>>> fixes. The current HS development happens in jdk9/hs-{comp,gc,runtime}
>>> and there's no plan to downport that to hsx (i.e. the hsx project has
>>> been disconnected)
>>
>> This discussion has confused me as I'm unclear if it is about repos,
>> version numbering, or actual contents - or all of the above.
>>
>> Most HS development is happening in 9 and some of that will be
>> backported to 8u. Mostly bug fixes but also some feature work.
>
> A mix of them all, I think.
>
> So, if someone needs a change backported from HotSpot in 9 to HotSpot
> in 8 and/or 7, what is the current process?

I'm not sure we have an official process as such. First point of call 
would be to raise it on the right HS mailing list and find a "sponsor" 
who could do the JPRT push for you. The issue of what can/should be 
backported is much more subjective depending on the nature of the 
change, and its potential impact on compatibility etc.

David

>>
>> David
>>
>>>>> Regards,
>>>>> Volker
>>>>>
>>>>>> regards,
>>>>>>
>>>>>>
>>>>>> Andrew Dinn
>>>>>> -----------
>>>>>>
>>>>>
>>>>
>>>> --
>>>> Andrew :)
>>>>
>>>> Free Java Software Engineer
>>>> Red Hat, Inc. (http://www.redhat.com)
>>>>
>>>> PGP Key: 248BDC07 (https://keys.indymedia.org/)
>>>> Fingerprint = EC5A 1F5E C0AD 1D15 8F1F  8F91 3B96 A578 248B DC07
>>>>
>>
>