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Re: [Xen-devel] [PATCH 2/5] MdePkg: Allow PcdFSBClock to by Dynamic

On Mon, Feb 03, 2020 at 01:34:55AM +0000, Gao, Liming wrote:
> Anthony:
>   This change is OK to me. But if this PCD is configured as Dynamic, its 
> value will be got from PCD service. This operation will take some time and 
> cause the inaccurate time delay. Have you measured its impact?

No, I haven't. But I don't think it matter in a Xen guest, the APIC timer is
emulated anyway, so reading from a register of the APIC is going to be
slower than getting the value from the PCD services, I think.
(Hopefully, I'm not too wrong.)

But I'll give it at measuring the difference, it would be interesting to


Anthony PERARD

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