From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: [PATCH 00/20] iommu/amd: Use generic IOVA allocator Date: Tue, 12 Jul 2016 12:55:33 +0200 Message-ID: <20160712105533.GE12639@8bytes.org> References: <1467978311-28322-1-git-send-email-joro@8bytes.org> <5784B24C.60305@iommu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <5784B24C.60305@iommu.org> Sender: linux-kernel-owner@vger.kernel.org To: Wan Zongshun Cc: iommu@lists.linux-foundation.org, Vincent.Wan@amd.com, linux-kernel@vger.kernel.org List-Id: iommu@lists.linux-foundation.org Hey Vincent, On Tue, Jul 12, 2016 at 05:03:08PM +0800, Wan Zongshun wrote: > Currently, those patches can not work at my eCarrizo board. > When I merged your patches, boot failed, and no any info print to me. > I set iommu=pt, it also does not work; set iommu=soft, boot ok. > > When I removed those patches, kernel boot ok. > > This eCarrizo board uart doesnot work, so I can not get useful > information from kernel by uart console, I also set 'text' in boot > option, but still cannot print any log. Thanks for your testing. The issue turned out to be an older bug, which just got uncovered by these patches. I updated the branch at git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git amd-iommu-iova This branch boots now on my Kaveri and Carrizo system. Can you please give it a test too? Thanks, Joerg