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Re: [Qemu-devel] invtsc + migration + TSC scaling
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From: |
Radim Krčmář |
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Subject: |
Re: [Qemu-devel] invtsc + migration + TSC scaling |
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Date: |
Tue, 18 Oct 2016 15:38:01 +0200 |
2016-10-18 15:36+0200, Radim Krčmář:
> 2016-10-17 18:24+0200, Paolo Bonzini:
>> We should also blacklist the TSC deadline timer when invtsc is not
>> available.
>
> True.
>
> I was thinking that with Wanpeng's VMX preemption patches, we might not
> need the TSC nor paravirtual deadline timer, the because performance of
> LAPIC one-shot could be very similar.
No, I sent before thinking -- deadline timer also has better precision,
so it is still useful.