Hi Joerg, This problem is caused by the latest updates in iommu module, and we are trying to fix it. When it is fixed, we will send out a new version of the patchset. Thanks Zhenhua On 05/08/2015 01:32 AM, Joerg Roedel wrote: > Hi Baoquan, ZhenHua, > > On Mon, May 04, 2015 at 11:17:49AM +0800, Baoquan He wrote: >> On 05/04/15 at 11:06am, Li, ZhenHua wrote: >>> Hi baoquan, >>> Could you paste the kernel log of the first kernel ? > > Please let me know when you have worked this issue out. > > > Thanks, > > Joerg >