From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3rStrX612tzDqZq for ; Mon, 13 Jun 2016 23:28:12 +1000 (AEST) Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u5DDOFFg074387 for ; Mon, 13 Jun 2016 09:28:08 -0400 Received: from e24smtp03.br.ibm.com (e24smtp03.br.ibm.com [32.104.18.24]) by mx0b-001b2d01.pphosted.com with ESMTP id 23getkpqdx-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 13 Jun 2016 09:28:08 -0400 Received: from localhost by e24smtp03.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 13 Jun 2016 10:28:06 -0300 Received: from d24relay03.br.ibm.com (d24relay03.br.ibm.com [9.13.184.25]) by d24dlp01.br.ibm.com (Postfix) with ESMTP id 5A26A352007C for ; Mon, 13 Jun 2016 09:27:48 -0400 (EDT) Received: from d24av05.br.ibm.com (d24av05.br.ibm.com [9.18.232.44]) by d24relay03.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u5DDS3kx65011756 for ; Mon, 13 Jun 2016 10:28:03 -0300 Received: from d24av05.br.ibm.com (localhost [127.0.0.1]) by d24av05.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u5DDS2k1030491 for ; Mon, 13 Jun 2016 10:28:02 -0300 Subject: Re: [PATCH] powerpc: convert 'iommu_alloc failed' messages to dynamic debug To: Benjamin Herrenschmidt , linuxppc-dev@lists.ozlabs.org References: <1465563831-6565-1-git-send-email-mauricfo@linux.vnet.ibm.com> <1465686148.19533.28.camel@kernel.crashing.org> From: Mauricio Faria de Oliveira Date: Mon, 13 Jun 2016 10:27:58 -0300 MIME-Version: 1.0 In-Reply-To: <1465686148.19533.28.camel@kernel.crashing.org> Content-Type: text/plain; charset=utf-8; format=flowed Message-Id: <575EB4DE.9080807@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Ben, On 06/11/2016 08:02 PM, Benjamin Herrenschmidt wrote: > I'm not fan of this. This is a very useful message to diagnose why, > for example, your network adapter is not working properly. > > A lot of drivers don't deal well with IOMMU errors. > > The fact that NVME trigger these is a problem that needs to be solved > differently. Ok, I understand your points. Thanks for the review -- helps in setting another direction. Kind regards, -- Mauricio Faria de Oliveira IBM Linux Technology Center