<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [KVM][GVT-d] [BDW & SKL ]Ubuntu 16.04 guest boot up with GPU Hang with drm-intel kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=99028#c20">Comment # 20</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [KVM][GVT-d] [BDW & SKL ]Ubuntu 16.04 guest boot up with GPU Hang with drm-intel kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=99028">bug 99028</a> from <a class="email" href="mailto:xiong.y.zhang@intel.com" title="XiongZhang <xiong.y.zhang@intel.com>"> XiongZhang</a> <pre>Created <a href="attachment.cgi?id=130728" name="attach_130728" title="host_dmesg_boot_guest_4.8_kernel">attachment 130728</a> <a href="attachment.cgi?id=130728&action=edit" title="host_dmesg_boot_guest_4.8_kernel">[details]</a> host_dmesg_boot_guest_4.8_kernel This host message is gotten when I boot a default ubuntu 16.10 kernel based on v4.8 with stolen memory enabled. From this dmesg, we could see there are several IOMMU interrupt faults at stolen memory. But there are tons of IOMMU interrupt faults at 0xff20c000 where I don't know who owns. while I didn't see gpu hang in this guest during the boot process. The access to 0xff20c0000 should be a bug and it has been fixed in drm-intel-nightly.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>