https://bugzilla.kernel.org/show_bug.cgi?id=191701 Bug ID: 191701 Summary: AMD-Vi completion-wait loop time outs freeze system Product: Virtualization Version: unspecified Kernel Version: 4.8.15 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: twtduck.ii@xxxxxxxxx Regression: No Created attachment 249591 --> https://bugzilla.kernel.org/attachment.cgi?id=249591&action=edit The last few lines from the system log before I had to force reboot. When I boot my 4.8.15 kernel, by the time my login screen shows, the system rapidly lags out and freezes in a couple seconds. In the system log (relevant subsection attached), this seems to be caused by AMD-Vi having time-outs. Perhaps part of the problem is that the hardware that I'm using (Acer e5-553g) has basically no virtualization support. I'd really like to upgrade my kernel to fix some minor issues with my graphics driver, but this seems to be holding me back and I don't know how to fix it. Since this wasn't a problem in 4.4.39, I figured it might be a good idea to file a bug report, so that other people with similar issues may have them resolved before trying to dig deep into the heart of the problem and/or giving up. There seems to have been a similar bug back in 3.6.11, that was more widespread. After some searching, I haven't found this bug reported yet, so I figured I'd go ahead and blaze that trail. -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
