From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chen, Tiejun" Subject: Re: [bisected] KVM in 3.19-rc1 is completely broken Date: Thu, 25 Dec 2014 08:55:30 +0800 Message-ID: <549B6082.6030805@intel.com> References: <54992591.5070206@intel.com> <1967770651.2358249.1419369239480.JavaMail.zimbra@redhat.com> <549A781A.6010505@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Paolo Bonzini , jamie@audible.transient.net, kvm list , Igor Mammedov To: Andy Lutomirski Return-path: Received: from mga01.intel.com ([192.55.52.88]:56008 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751742AbaLYAzd (ORCPT ); Wed, 24 Dec 2014 19:55:33 -0500 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On 2014/12/25 1:11, Andy Lutomirski wrote: > On Wed, Dec 24, 2014 at 12:23 AM, Chen, Tiejun wrote: >> On 2014/12/24 5:29, Andy Lutomirski wrote: >>> >>> On Tue, Dec 23, 2014 at 1:13 PM, Paolo Bonzini >>> wrote: >>>> >>>> >>>>> I can reproduce it using the same steps on a Sandy Bridge laptop, with >>>>> whatever QEMU is packaged in Fedora 21. I attached the config. >>>>> >>>>> I also submitted a virtme update for Fedora Rawhide and 21 (20 is >>>>> still building) in case it helps. The build is here: >>>>> >>>>> http://koji.fedoraproject.org/koji/buildinfo?buildID=600732 >>>> >>>> >>>> The other reporter bisected it to >>>> 0e60b0799fedc495a5c57dbd669de3c10d72edd2. Can you try its parent? >>> >>> >>> That's what I bisected it to. The parent works. >>> >>>> >>>> Also, does it break with 3.18 host and 3.19-rc1 guest, or with >>>> 3.19-rc1 host and 3.18 guest? (Sorry I should do this myself >>>> but I'm a bit swamped due to vacation until Jan 6th). >>>> >>> >>> The breakage is with 3.17.7-something L0 and the same test kernel as >>> L1 and L2. I think it breaks the same way with 3.19-rc1 as host and >>> guest without any nesting, but that's awkward to test right now. >>> >> >> >> Andy, >> >> Could you try this? >> >> Signed-off-by: Tiejun Chen > > I applied it by hand, and it survives extremely light testing. > > Tested-by: Andy Lutomirski > Looks good so thanks for your validation. Tiejun