From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: [RFC PATCH v3 14/20] iommu/amd: Disable AMD IOMMU if memory encryption is active Date: Mon, 14 Nov 2016 17:32:04 +0100 Message-ID: <20161114163204.GA2078@8bytes.org> References: <20161110003426.3280.2999.stgit@tlendack-t1.amdoffice.net> <20161110003731.3280.67205.stgit@tlendack-t1.amdoffice.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from 8bytes.org ([81.169.241.247]:59379 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752446AbcKNQcH (ORCPT ); Mon, 14 Nov 2016 11:32:07 -0500 Content-Disposition: inline In-Reply-To: <20161110003731.3280.67205.stgit@tlendack-t1.amdoffice.net> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Tom Lendacky Cc: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Rik van Riel , Radim =?utf-8?B?S3LEjW3DocWZ?= , Arnd Bergmann , Jonathan Corbet , Matt Fleming , Konrad Rzeszutek Wilk , Paolo Bonzini , Larry Woodman , Ingo Molnar , Borislav Petkov , Andy Lutomirski , "H. Peter Anvin" , Andrey Ryabinin , Alexander Potapenko On Wed, Nov 09, 2016 at 06:37:32PM -0600, Tom Lendacky wrote: > + /* For now, disable the IOMMU if SME is active */ > + if (sme_me_mask) > + return -ENODEV; > + Please print a message here telling the user why the IOMMU got disabled. Thanks, Joerg From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from 8bytes.org ([81.169.241.247]:59379 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752446AbcKNQcH (ORCPT ); Mon, 14 Nov 2016 11:32:07 -0500 Date: Mon, 14 Nov 2016 17:32:04 +0100 From: Joerg Roedel Subject: Re: [RFC PATCH v3 14/20] iommu/amd: Disable AMD IOMMU if memory encryption is active Message-ID: <20161114163204.GA2078@8bytes.org> References: <20161110003426.3280.2999.stgit@tlendack-t1.amdoffice.net> <20161110003731.3280.67205.stgit@tlendack-t1.amdoffice.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161110003731.3280.67205.stgit@tlendack-t1.amdoffice.net> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Tom Lendacky Cc: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Rik van Riel , Radim =?utf-8?B?S3LEjW3DocWZ?= , Arnd Bergmann , Jonathan Corbet , Matt Fleming , Konrad Rzeszutek Wilk , Paolo Bonzini , Larry Woodman , Ingo Molnar , Borislav Petkov , Andy Lutomirski , "H. Peter Anvin" , Andrey Ryabinin , Alexander Potapenko , Thomas Gleixner , Dmitry Vyukov Message-ID: <20161114163204.tFnzpUN2mrzziSj7JQk_9zR3Sa1jfe2wLWvGrDUw2mk@z> On Wed, Nov 09, 2016 at 06:37:32PM -0600, Tom Lendacky wrote: > + /* For now, disable the IOMMU if SME is active */ > + if (sme_me_mask) > + return -ENODEV; > + Please print a message here telling the user why the IOMMU got disabled. Thanks, Joerg