Re: [Xenomai] [FOR TESTING] I-pipe for 3.8-rc6-x86

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2013-02-05 22:09, Jan Kiszka wrote:
> Hi,
> 
> to move forward with our kernel support, I've started porting I-pipe to
> upcoming 3.8. The result survived a very basic test in a VM, more
> torturing is definitely required. In case someone already wants to have
> a look or start porting other archs:
> 
>   git://git.xenomai.org/ipipe-jki next-x86
>   (Note: "next" branches may be rebased without warning)
> 
> Xenomai generates minor troubles while building. PCI drivers seem to
> require some massaging, and we get an ugly warning of Kconfig on every
> build:

Brief update:
 - Xenomai patches for those two issues are now in my for-upstream
   queue (git.xenomai.org/xenomai-jki).
 - Xenomai's FPU switching collides with the new eager FPU management
   of the kernel.
   This affects only recent Intel CPUs with xsave support and a can be
   avoided by disabling this method for now ("eagerfpu=off" kernel
   parameter). I'm looking into fixing this properly.

Besides this, at least x86-64 works well. I still need to check 32-bit,
though.

Jan

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