From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: Re: BUG ALERT: ARM32 KVM does not work in 4.4-rc3 Date: Tue, 01 Dec 2015 09:25:18 +0000 Message-ID: <565D677E.8000505@arm.com> References: <00fe01d12c09$576ca200$0645e600$@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit To: Pavel Fedin , kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Return-path: Received: from foss.arm.com ([217.140.101.70]:33900 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753010AbbLAJZV (ORCPT ); Tue, 1 Dec 2015 04:25:21 -0500 In-Reply-To: <00fe01d12c09$576ca200$0645e600$@samsung.com> Sender: kvm-owner@vger.kernel.org List-ID: On 01/12/15 07:24, Pavel Fedin wrote: > Hello! > > My project involves ARM64, but from time to time i also test ARM32 > KVM. I have discovered that it stopped working in 4.4-rc3. The same > virtual machine works perfectly under current kvmarm/next, but gets > stuck at random point under 4.4-rc3 from linux-stable. I'm not sure > that i have time to investigate this quickly, but i'll post some new > information as soon as i get it root@canarsie:~# uname -a Linux canarsie 4.4.0-rc3 #5044 SMP PREEMPT Tue Dec 1 09:12:40 GMT 2015 armv7l GNU/Linux root@canarsie:~# cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 4 (v7l) BogoMIPS : 48.00 Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 4 processor : 1 model name : ARMv7 Processor rev 4 (v7l) BogoMIPS : 48.00 Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 4 Hardware : Generic DT based system Revision : 0000 Serial : 0000000000000000 The same kernel is used both as a guest and a host with v4.4-rc3. So until you bisect it to an exact commit and configuration, I declare the alert over. ;-) Thanks, M. -- Jazz is not dead. It just smells funny...