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Re: [Xen-devel] [PATCH v9] new config option vtsc_tolerance_khz to avoid TSC emulation



>>> On 07.06.18 at 16:49, <olaf@xxxxxxxxx> wrote:
> Am Thu, 07 Jun 2018 08:44:41 -0600
> schrieb "Jan Beulich" <JBeulich@xxxxxxxx>:
> 
>> The re-use of the field is acceptable only if all existing senders reliably
>> fill zero in there.
> 
> How do we know all senders? I just know about write_tsc_info from xen-4.6+.

I don't think we care about senders other than ones using libxc, so
by knowing whether all libxc versions conform to the requirement,
we could declare we're fine.

Jan



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