Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [PATCH v2 1/3] KVM: x86: implement KVM_{GET|SET}_TSC_STATE | Date | Tue, 15 Dec 2020 23:34:46 +0100 |
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On Tue, Dec 15 2020 at 07:59, Marcelo Tosatti wrote: > On Fri, Dec 11, 2020 at 10:59:59PM +0100, Paolo Bonzini wrote: >> So it's still true that the time advances during live migration brownout; >> 0.1 seconds is just the final part of the live migration process. But for >> _live_ migration there is no need to design things according to "people are >> happy if their clock is off by 0.1 seconds only". > > Agree. What would be a good way to fix this?
None of what's proposed is fixing the underlying problem of wreckaging CLOCK_REALTIME.
Stop proliferating broken behaviour and please answer the questions I asked several times now:
1) Why has the TSC has to restart at the same value?
2) What is the technical argument that it is correct and acceptable to wreckage CLOCK_REALTIME by doing #1?
Thanks,
tglx
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