From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu, 2 Apr 2015 11:04:00 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] ARMv8 (ARM64) port of Xenomai
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To: Hongfei Cheng <hongfei@mperpetuo.com>
Cc: Jan Kiszka <jan.kiszka@web.de>, xenomai@xenomai.org

On Thu, Apr 02, 2015 at 01:12:11AM -0700, Hongfei Cheng wrote:
> Thank you all again for the clear and prompt responses, along with
> the informative discussions.
> 
> A follow-up question to the kernel module(s) requiring changes for
> supporting I-pipe for Aarch64/arm64: After enabling I-pipe (but with
> xenomai-3 disabled) in the kernel with the ipipe-core patch for
> Aarch32/arm, building the Aarch64 kernel image shows clear dependency on
> I-pipe specific code in arch/arm64/kernel. This observation appears
> to deviate from Gilles' earlier advice -- "there is no reason to touch
> boot, kernel, mm".
> 
> Since the Aarch64 code in arch/arm64/kernel differs quite a bit from the
> Aarch32 code in arch/arm/kernel, porting the ipipe-core code from
> arch/arm/kernel to arch/arm64/kernel will require significant amount of
> work. I'd appreciate if anyone can affirm or refute the need to touch
> arch/arm64/kernel for Aarch64/arm64, before I go too far and veer off the
> road.

Speaking in directory/files is meaningless, what matters is what you
change. I think I have given you a list of what to change already.
If some files to change are in the kernel directory, then OK, I was
wrong.

-- 
					    Gilles.