From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2FFA6C43381 for ; Fri, 22 Feb 2019 19:19:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E7DF120700 for ; Fri, 22 Feb 2019 19:19:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=dellteam.com header.i=@dellteam.com header.b="uIMUwW7t" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725990AbfBVTTT (ORCPT ); Fri, 22 Feb 2019 14:19:19 -0500 Received: from esa2.dell-outbound.iphmx.com ([68.232.149.220]:41554 "EHLO esa2.dell-outbound.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725767AbfBVTTT (ORCPT ); Fri, 22 Feb 2019 14:19:19 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=dellteam.com; i=@dellteam.com; q=dns/txt; s=smtpout; t=1550863158; x=1582399158; h=cc:from:to:subject:date:message-id:references: content-transfer-encoding:mime-version; bh=WMxBvZ0LSIpFX0vUXKVZnb0yHV1iHE0/Huw9G8W0hI0=; b=uIMUwW7tJpWayYc9H8WWrLuclA1nEJFFDgA0IynJovoyzDGEYvc9fktN Ngd5tzvdVOMDxB+CfqNU7/yNtIl060tJOgMTACgQ7FDKdPRMfnZWSED/0 0rj8h5/qqHCYoiR/XeFCWoSE+VFfH0SmCsaDSfufVDLt2ExoRHxGWMLLl U=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A2FrAACfSHBchyWd50NkHQEBBQEHBQG?= =?us-ascii?q?BUwYBCwGCWYEUJwqMdop7gg2BfZYhgXsLAQEshECEASI2Bw0BAwEBAgEBAgE?= =?us-ascii?q?BAhABAQEKCwkIKS+COiKCcAEBAQMSKDUKEAIBCBgeEFcCBBMIGoJ+gXOfTD0?= =?us-ascii?q?CbYEBiQcBAQGCHooyjEiCFoN1LoRlHE2FFAKMD5dKCQWSUyGBcYVbi0OcXAI?= =?us-ascii?q?EAgQFAhSBTgSCBHCDPII2jidBMYEojUQBgR4BAQ?= X-IPAS-Result: =?us-ascii?q?A2FrAACfSHBchyWd50NkHQEBBQEHBQGBUwYBCwGCWYEUJ?= =?us-ascii?q?wqMdop7gg2BfZYhgXsLAQEshECEASI2Bw0BAwEBAgEBAgEBAhABAQEKCwkIK?= =?us-ascii?q?S+COiKCcAEBAQMSKDUKEAIBCBgeEFcCBBMIGoJ+gXOfTD0CbYEBiQcBAQGCH?= =?us-ascii?q?ooyjEiCFoN1LoRlHE2FFAKMD5dKCQWSUyGBcYVbi0OcXAIEAgQFAhSBTgSCB?= =?us-ascii?q?HCDPII2jidBMYEojUQBgR4BAQ?= Received: from mx0b-00154901.pphosted.com ([67.231.157.37]) by esa2.dell-outbound.iphmx.com with ESMTP/TLS/AES256-SHA256; 22 Feb 2019 13:19:16 -0600 Received: from pps.filterd (m0144104.ppops.net [127.0.0.1]) by mx0b-00154901.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1MJDBnn196550; Fri, 22 Feb 2019 14:19:16 -0500 Received: from esa2.dell-outbound2.iphmx.com (esa2.dell-outbound2.iphmx.com [68.232.153.202]) by mx0b-00154901.pphosted.com with ESMTP id 2qtmm9gsge-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 22 Feb 2019 14:19:15 -0500 Cc: , , , , , , , , , , , Received: from ausc60pc101.us.dell.com ([143.166.85.206]) by esa2.dell-outbound2.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA256; 23 Feb 2019 01:18:58 +0600 X-LoopCount0: from 10.166.134.85 X-IronPort-AV: E=Sophos;i="5.58,400,1544508000"; d="scan'208";a="1365407354" From: To: Subject: Re: [PATCH RFC v2 4/4] PCI: hotplug: Add quirk For Dell nvme pcie switches Thread-Topic: [PATCH RFC v2 4/4] PCI: hotplug: Add quirk For Dell nvme pcie switches Thread-Index: AQHUyLqRKxehBZutlk6MputMunrGNg== Date: Fri, 22 Feb 2019 19:19:10 +0000 Message-ID: <747feb2ef93c4c5e97813232904de829@ausx13mps321.AMER.DELL.COM> References: <20190220012031.10741-1-mr.nuke.me@gmail.com> <20190220012031.10741-5-mr.nuke.me@gmail.com> <20190221075634.uih5ysqwkna7cku4@wunner.de> <027101b4652c4e0c98b86649aa3e4732@ausx13mps321.AMER.DELL.COM> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [143.166.11.235] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-02-22_12:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=979 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902220132 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On 2/21/19 8:05 PM, Oliver wrote:=0A= > On Fri, Feb 22, 2019 at 5:38 AM wrote:=0A= >> On 2/21/19 1:57 AM, Lukas Wunner wrote:=0A= [snip]=0A= >>> If the quirk is x86-specific, please enclose it in "#ifdef CONFIG_X86"= =0A= >>> to reduce kernel footprint on other arches.=0A= >>=0A= >> That's a tricky one. If you look at p. 185 of [1], items 9, 11, and 12= =0A= >> are standard x16 cards that would fit in any x16 slot. Those cards have= =0A= >> the offending switches.=0A= >>=0A= >> On the one hand, you could take the cards and backplane and put them in= =0A= >> a non-hax86 system. On the other hand, I don't see why someone would=0A= >> want to do this.=0A= > =0A= > I have a couple of POWER boxes with Dell branded switch cards in them.=0A= > I have no idea why either, but it does happen.=0A= =0A= The hardware debouncer, I think, is on the backplane, so you'd really =0A= need both the switch and backplane combo. I've seen other marketing =0A= departments call the switches "NVMe HBA".=0A= =0A= Alex=0A=