On 05/23/2017 05:29 PM, Jeff Melvile wrote:
> 
> 
> On Mon, 22 May 2017, Philippe Gerum wrote:
> 
>> On 05/22/2017 11:15 AM, Henning Schild wrote:
>>> Am Sun, 21 May 2017 21:19:22 +0200
>>> schrieb Philippe Gerum <[email protected]>:
>>>
>>>> Xenomai 3.0.5 is out. A few bug fixes, most notably in the Cobalt
>>>> core, and several cleanups for better supporting different C
>>>> libraries. This release also provides support for kernel series up to
>>>> 4.9.x (included).
>>>>
>>>> http://xenomai.org/downloads/xenomai/stable/latest/xenomai-3.0.5.tar.bz2
>>>>
>>>
>>> This is currently just a tag on no upstream branch. Please update
>>> stable-3.0.x and probably master as well.
>>>
>>
>> Master is not aimed at reflecting the latest stable, if any, it should
>> reflect the tip of the development which is the -next branch; however
>> this tracking is not followed. Actually the master branch should go away.
>>
>> -- 
>> Philippe.
>>
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>> https://xenomai.org/mailman/listinfo/xenomai
>>
> 
> Philippe,
> 
> Can I ask a few clarifications about the release?
> 
> I noticed that there is an arm64 directory in the cobalt/arch directory of 
> the tarball but it is empty. I assume this is a mistake and arm64 is not 
> supported in 3.0.5. I see cobalt/arch/arm64 in the next branch.
>

For some reason, make distcheck picked a left over directory to compose
the tarball although it is clearly not mentioned in the configuration
template. Oh, well...

> You also mentioned that the release supports up to kernel series 4.9.x. 
> There aren't any ipipe patches beyond 4.4.x in 
> xenomai.org/downloads/ipipe. Is the ipipe-4.9.y branch generally stable 
> for use with this release? Or was your statement meant to convey that 
> 3.0.5 will be compatible with an ipipe-4.9 patch when it is released?

The latter interpretation is correct. Support for 4.9 is still very
recent, and not yet available for all archs Cobalt runs on. x86* had
some significant testing already, although it still needs more. Support
for arm and powerpc is at the early stage, only lightly tested over
imx6qp and 52xx resp. so far. Blackfin and powerpc64 code was ported but
only compile-tested so far, and I'm banging my head on the arm64 wall at
the moment.

> 
> Can you (or anyone else) provide a general update on arm64 status? I 
> haven't seen anything for a few months. We're 
> currently considering migrating from an arm, Xenomai 2.6.5 setup to an 
> arm64, Xenomai 3 Cobalt configuration. We're happy to help with 
> development to the extent we're able.
> 

I'm on it right now, debugging the -next branch over a HiKey board
running 4.9. I'll be certainly investing significant time on running
co-kernels efficiently over arm64 in the future.

I'll push the kernel bits for arm64 support I'm working on hopefully
this week.

-- 
Philippe.

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