linux-kernel - RE: [PATCH] x86/AMD: Fix Socket ID for LLC topology for AMD Fam17h systems

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Date:   Fri, 2 Sep 2016 12:57:55 +0000
From:   "Ghannam, Yazen" <Yazen.Ghannam@....com>
To:     Thomas Gleixner <tglx@...utronix.de>
CC:     "mingo@...hat.com" <mingo@...hat.com>,
        "hpa@...or.com" <hpa@...or.com>, "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] x86/AMD: Fix Socket ID for LLC topology for AMD Fam17h
 systems

> 
> > The Socket ID is ApicId[bits] on Fam17h systems.
> >
> > Change substraction to logical AND when extracting socket_id
> > from c->apicid.
> 
> So Fam17h will only ever have 2 sockets, right?
> 

This is the decoding of the ApicId shown in our latest Programming
Reference. However, I can remove the "& 1" if you think it'll be better.

Thanks,
Yazen