Re: [Xen-devel] [PATCH v12] tolerate jitter in cpu_khz calculation to avoid TSC emulation

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 11.03.19 at 11:26, <olaf@xxxxxxxxx> wrote:
> Am Mon, 11 Mar 2019 04:02:14 -0600
> schrieb "Jan Beulich" <JBeulich@xxxxxxxx>:
> 
>> > One interesting aspect is: the xenlinux based kernels report 
> clocksource=tsc,  
>> I don't think they do - iirc they are hardcoded to clocksource=xen.
> 
> For HVM they do:

There's no such thing as a XenoLinux guest running in HVM mode. The
only HVM-related derivate from XenoLinux are the PV drivers used by
the corresponding version HVM guests. Time management inside such
HVM guests is entirely unaffected by this iirc, i.e. matches that of
plain HVM (without any PV extensions).

Jan



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