Re: [Xen-devel] [PATCH v1] core: mount xenfs, ignore proc-xen.mount (#6442, #6662)

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.11.17 at 09:23, <olaf@xxxxxxxxx> wrote:
> On Wed, Nov 29, Jan Beulich wrote:
> 
>> Ah, I see. But then still I don't see why at least on half way
>> recent Xen /sys/hypervisor/properties/features wouldn't have
>> the information you're after (and even more precise, because
>> down the road control domain and hardware domain may be
>> separate entities).
> 
> Per discussion in https://github.com/systemd/systemd/pull/6662, the
> feature bits should not be used for dom0 detection.

I can't seem to interpret that discussion the way you do. In fact
(as I've said before) using the feature flag is more reliable, as it
being set implies this is the hardware domain (rather than the
more fuzzy "control domain" implied by "control_d").

Wei, your comments there from Oct 27 and 30 are what I think
Olaf refers to. Could you clarify this?

Jan


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