From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: XP machine freeze Date: Mon, 13 Apr 2015 16:02:08 +0200 Message-ID: <552BCC60.1000103@redhat.com> References: <009701d05ffb$5e37a740$1aa6f5c0$@astim.si> <550EE047.3030605@fnarfbargle.com> <5519BBF4.7080600@redhat.com> <552B40F7.5080107@fnarfbargle.com> <552BB8D5.7060200@redhat.com> <552BBA87.50109@fnarfbargle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit To: Brad Campbell , Saso Slavicic , kvm@vger.kernel.org, =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= Return-path: Received: from mail-wi0-f172.google.com ([209.85.212.172]:36128 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932289AbbDMOCN (ORCPT ); Mon, 13 Apr 2015 10:02:13 -0400 Received: by wizk4 with SMTP id k4so73824850wiz.1 for ; Mon, 13 Apr 2015 07:02:11 -0700 (PDT) In-Reply-To: <552BBA87.50109@fnarfbargle.com> Sender: kvm-owner@vger.kernel.org List-ID: On 13/04/2015 14:45, Brad Campbell wrote: > G'day Paolo, > > Yes, on AMD and I've tried hard to reproduce it on Intel and been unable > to thus far. > > Now you mention it may be AMD specific, I have a spare motherboard and > processor sitting in a drawer. I'll bolt it together tomorrow and see if > I can reproduce it on another AMD machine. Two machines should let me > test it twice as fast. > > I got a fail this afternoon, so I'm due to reboot tonight. I'll just > revert that one suspect commit from a known bad kernel and see if that > cleans it up. If not then I'll work through the remainder of the > information in your mail. I really appreciate the attention you've paid > to this, it has been a frustrating bug for me because I'm in a position > of not knowing what I don't know, and obviously doing something wrong in > very long bisection processes. Actually, if you have time to change your course of action, please revert the one that Nadav pointed out (f210f7572bed, KVM: x86: Fix lost interrupt on irr_pending race) or cherry-pick it on top of 3.17. Paolo