Re: [Xen-devel] [PATCH] x86/time: fix scale_delta() inline assembly

[Mats Petersson <mats.petersson@xxxxxxxxxx>]

On 26/11/12 16:51, Sylvain Munaut wrote:
> I've just deployed this to a couple test servers that exhibited the problem.
>
> What I don't really understand is why are some HW affected and not others ?
I have no idea why some machines are more affected than others, but I 
can clearly see what Jan is saying, and how it will cause "weird" things 
to happen - but only if you hit the case where the calls are made in the 
right pattern, which I think is a matter of "luck". It will probably 
also matter what version of gcc is used to compile the code - different 
compiler versions will use registers in different ways.
--
Mats
> Cheers,
>
>      Sylvain
>
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