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Re: [Xen-devel] [PATCH 8/9] x86/rtc: replace paravirt_enabled() check with subarch check

On 19/02/16 13:08, Luis R. Rodriguez wrote:
> The current check is a super long winded way of asking if this
> is on lguest. The flags is used for legacy features, this is
> likely inspired by the ACPI IA-PC boot architecture flags, where
> as for RTC it annotates No CMOS real-time clock present. I don't
> expect we will be implementing more legacy features, its simply
> pointless so just remove this legacy flag feature thing as well.

No.  This check is needed for Xen PV domU guests and without it PV
guests don't get a console (as I think the history of the change that
introduced this makes clear).

I think this trend towards a coarse-grained subarch instead of a set of
feature bits is the wrong direction.


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