Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751816AbdGEPvB (ORCPT ); Wed, 5 Jul 2017 11:51:01 -0400 Received: from merlin.infradead.org ([205.233.59.134]:33094 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750896AbdGEPvA (ORCPT ); Wed, 5 Jul 2017 11:51:00 -0400 Date: Wed, 5 Jul 2017 17:50:53 +0200 From: Peter Zijlstra To: Suravee Suthikulpanit Cc: Borislav Petkov , x86@kernel.org, linux-kernel@vger.kernel.org, leo.duran@amd.com, yazen.ghannam@amd.com Subject: Re: [PATCH 1/2] x86/CPU/AMD: Present package as die instead of socket Message-ID: <20170705155053.jucdvggtxxczzkba@hirez.programming.kicks-ass.net> References: <1498545653-6755-1-git-send-email-suravee.suthikulpanit@amd.com> <1498545653-6755-2-git-send-email-suravee.suthikulpanit@amd.com> <20170627104803.wlhsqhaylbeqod37@pd.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 890 Lines: 22 On Tue, Jun 27, 2017 at 08:07:10PM +0700, Suravee Suthikulpanit wrote: > As I have described in the cover letter, this patch series changes how Which you didn't send to me... thanks for that. > kernel derives cpu "package" from package-as-socket to package-as-die in > order to fix following issues on AMD family17h multi-die processor > platforms: > These issues are fixed when properly intepretes package as DIE. > > For MCM Magny-Cours (family15h), we do not have this issue because the MC > sched-domain has the same cpumask as the DIE sched-domain. This is not the > same as for Zen cores (family17h) where the MC sched-domain is the CCX (2 > CCX per die) Are you saying that your LLCs are smaller than your NUMA nodes ? You do not in fact have a cache level that spans the memory controller? Because that is indeed the assumption we have for Intel CoD/SnC and AMD Magny-Cours.