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Re: [Xen-devel] [Question] Proper location for Linux error code (-EPROBE_DEFER) in Xen

  • To: Oleksandr <olekstysh@xxxxxxxxx>
  • From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Date: Thu, 1 Aug 2019 16:14:34 +0200
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On Thu, Aug 01, 2019 at 05:10:08PM +0300, Oleksandr wrote:
> Hello all.
> What is the proper location to place Linux error code (-EPROBE_DEFER) in
> Xen?
> https://elixir.bootlin.com/linux/v5.3-rc2/source/include/linux/errno.h#L19
> ...
> Although that error is going to be used by Arm code the first, I feel it
> should be somewhere in common place as it is not Arm specific.
> I was thinking to place it to xen/include/public/errno.h and guard with
> #ifdef __XEN__ to hide from userspace, but not sure it is a good idea, since
> it looks like not a POSIX one to be in that header...


I think it would help if you describe why such error code is needed by
Xen and how it would be used.

Thanks, Roger.

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