Re: [PATCH v3 1/2] x86/AMD: Fix cpu_llc_id for AMD Fam17h systems

[Borislav Petkov]

On Mon, Nov 07, 2016 at 08:31:21AM +0100, Ingo Molnar wrote:
> > cpu_llc_id (Last Level Cache ID) derivation on AMD Fam17h has an
> > underflow bug when extracting the socket_id value. It starts from 0

How's this...

> > so subtracting 1 from it will result in an invalid value. This breaks
> > scheduling topology later on since the cpu_llc_id will be incorrect.
   ^^^^^^^^^^^^^^^^^^^
... here?

> Same question as for the previous patch: what are the effects of the bug:

See above.

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    Boris.

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