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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 66D7EC282D8 for ; Fri, 1 Feb 2019 22:26:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22A3321726 for ; Fri, 1 Feb 2019 22:26:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549059971; bh=Cpss+fy5+fIQKtkw3L9ii9ARlhoVGKDaDPobdutu4nM=; h=Subject:To:Cc:References:From:Date:In-Reply-To:List-ID:From; b=EbhF/TSJiKKhPCFIkG/SI9I1y1q02Ydeq4w3oDWxCSr+u+IcsIODMEYrWwp/x+t7v gtH++mFVbxohRCNmy760PWzibLBu3khldtT/pqi5lj9kdkLzPb3sWVhW2I3foN1qfJ meLiRbH4kiO44B37GcR7KOMpPRSNAksB/JzBopSQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726639AbfBAW0K (ORCPT ); Fri, 1 Feb 2019 17:26:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:52972 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726606AbfBAW0K (ORCPT ); Fri, 1 Feb 2019 17:26:10 -0500 Received: from [192.168.0.111] (cpe-174-109-247-98.nc.res.rr.com [174.109.247.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 476082086C; Fri, 1 Feb 2019 22:26:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549059969; bh=Cpss+fy5+fIQKtkw3L9ii9ARlhoVGKDaDPobdutu4nM=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=igdjPmCalh9HVaw6UFFjnUe+4WoqL26vrMBYQV58kwW2kW1gNbLV7ugbumDX8twMl Ye1AnnnTQDUbfJ6VksqA73RlDD07C58gGQlDUNuHQUMW5IeywlTQkJl3IiMFYPDiF+ TRWy4+7CreuTsaY/NH8h4Q8x05LaSQRdVZpiSqCg= Subject: Re: PCI extended tags regression: 3ware 9650SE-2LP RAID controller not working on AMD Ryzen system To: Bjorn Helgaas , linux-pci@vger.kernel.org Cc: Robert Smith , Bart Van Assche , linux-kernel@vger.kernel.org References: <20190201215249.GT229773@google.com> From: Sinan Kaya Message-ID: <403fdf3f-9777-1f14-f02a-30c3897e948d@kernel.org> Date: Fri, 1 Feb 2019 17:26:08 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: <20190201215249.GT229773@google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On 2/1/2019 4:52 PM, Bjorn Helgaas wrote: > See https://bugzilla.kernel.org/show_bug.cgi?id=202425. > > Robert bisected a problem with a 3ware 9650SE-2LP controller to > 60db3a4d8cc9 ("PCI: Enable PCIe Extended Tags if supported") and > verified that reverting it solves the problem. > > We have found issues in the past where Root Ports don't handle > extended tags correctly and have added quirks to avoid use of them: > > 1b30dfd376e2 ("PCI: Mark Broadcom HT1100 and HT2000 Root Port Extended Tags as broken") > 62ce94a7a5a5 ("PCI: Mark Broadcom HT2100 Root Port Extended Tags as broken") > > I don't know yet what Root Ports Robert has, but maybe we need a > similar quirk? > > I'm pretty sure Root Ports that don't handle extended tags are out of > spec, so it would be ideal if we could get the manufacturer to provide > an erratum as documentation. > I agree. The issue needs to be directed to AMD. PCI spec says it is safe to enable this option. I also have not heart of a single complaint from Intel systems. > Bjorn >