Re: [Xen-devel] Is: axe read_tscp pvops call. Was: Re: [RFC] ACPI S3 and Xen (suprisingly small\!).

["H. Peter Anvin" <hpa@xxxxxxxxx>]

On 10/17/2012 09:54 AM, Konrad Rzeszutek Wilk wrote:
> > Could you do an audit for other pvops calls that have no users?  If
> > the *only* user is lguest, we should talk about it, too...
> I can do that - but I don't want to be hasty here. There is a bit of
> danger here - for example the read_pmc (or read_tsc) is not in use right
> now. But it might be when one starts looking at making perf be able to
> analyze the hypervisor (hand-waving the implementation details). So while
> removing read_pmc now sounds good, it might be needed in the future.
We do not keep a pvop around just because it "might be needed in the 
future".  That's just crazy.
        -hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


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