Re: [Xen-devel] emulated tsc and frequency info

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 20/07/2010 10:20, "Juergen Gross" <juergen.gross@xxxxxxxxxxxxxx> wrote:

> with xen 4.0 and xen-unstable I see weird tsc information in my HVM-domain
> with PV-driver, if xen chooses to emulate tsc (d->arch.vtsc is set):
> 
> In the shared info page the tsc_to_system_mul is still reflecting the host
> cpu frequency instead of the emulated 1 GHz.
> 
> The reason is quite simple: tsc_set_info() is never called with a gtsc_khz
> value other than 0. I wonder which solution is the correct one:
> - if tsc_set_info() is called with gtsc_khz=0, assume 1 GHz (my favorite).

That sounds best to me. Cc'ing Dan as he may have an opinion.

 -- Keir



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