From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755045AbdEEPeE (ORCPT ); Fri, 5 May 2017 11:34:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49280 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754303AbdEEPeA (ORCPT ); Fri, 5 May 2017 11:34:00 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com A8E6680E7A Authentication-Results: ext-mx01.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx01.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jcm@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com A8E6680E7A Subject: Re: [PATCH v3 3/7] ACPICA: IORT: Add Cavium ThunderX2 SMMUv3 model definition. To: Will Deacon , David Daney References: <1493986091-30521-1-git-send-email-gakula@caviumnetworks.com> <1493986091-30521-4-git-send-email-gakula@caviumnetworks.com> <330d0438-f9ed-ef65-8ffd-d556d149b4e1@linaro.org> <6b04ab17-449f-74e0-72f4-b5a9bc0639d8@gmail.com> <20170505145800.GG14111@arm.com> Cc: Hanjun Guo , Geetha sowjanya , robin.murphy@arm.com, lorenzo.pieralisi@arm.com, sudeep.holla@arm.com, iommu@lists.linux-foundation.org, Geetha Sowjanya , linu.cherian@cavium.com, linux-kernel@vger.kernel.org, geethasowjanya.akula@gmail.com, linux-acpi@vger.kernel.org, robert.richter@cavium.com, catalin.marinas@arm.com, sgoutham@cavium.com, linux-arm-kernel@lists.infradead.org, Charles.Garcia-Tobin@arm.com From: Jon Masters Message-ID: Date: Fri, 5 May 2017 11:33:47 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.0 MIME-Version: 1.0 In-Reply-To: <20170505145800.GG14111@arm.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Fri, 05 May 2017 15:33:50 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/05/2017 10:58 AM, Will Deacon wrote: > On Fri, May 05, 2017 at 07:56:17AM -0700, David Daney wrote: >> On 05/05/2017 06:53 AM, Hanjun Guo wrote: >>> On 2017/5/5 20:08, Geetha sowjanya wrote: >>>> From: Linu Cherian >>>> +#define ACPI_IORT_SMMU_V3_CAVIUM_CN99XX 0x00000002 /* Cavium ThunderX2 >>>> SMMUv3 */ >>> >>> There are some other model numbers in the unreleased spec, >>> I think we need to wait for the updated IORT spec to >>> be released. Indeed. I've synced with the author on this and he's got it in hand. >> ... or if we are fairly confident that the identifier will not need to >> change, we can merge this as is and establish a de facto specification that >> the Real IORT specification will then be forced to follow. Can't do that - this always causes trouble ;) But if there's any delay I'll ask that the IDs at least be listed somewhere public or something. >> Is there anything other than bureaucratic inertia holding up the real >> specification? > > My understanding is that IORT is going to be published imminently (i.e. > before the next kernel release), so it makes sense to wait rather than fork > the spec. Let's track this and get the updated patches posted next week once the new ID drops. Meanwhile, I suggest reviewing them as-is for other issues. I'm tracking this for internal purposes and require this to be upstream asap so I'll be sitting on this thread for updates ;) Jon. -- Computer Architect | Sent from my Fedora powered laptop