Re: [Users] [Bug 881579] kernel-3.6.7-4 causes panic on FreeBSD KVM guest with >1 CPU

ons 2012-12-19 klockan 01:28 +0000 skrev bugzilla(a)redhat.com: > Product: Fedora > https://bugzilla.redhat.com/show_bug.cgi?id=881579 > > --- Comment #3 from Marcelo Tosatti <mtosatti(a)redhat.com <mailto:mtosatti@redhat.com>> --- > Its very likely the cause for this are instruction emulation upstream > (emulation of invalid guest state by default). > > These are being fixed upstream. Once that is completed, it will be necessary to > backport > to FC17. > > In the meantime, loading kvm-intel.ko with emulate_invalid_guest_state=0 should > work around the problem (tested locally on kvm.git as of dec/2012). > For future reference, I want to add what measures have been taken: From oVirt Webadmin, the Host was set into Maintenance. Then this file: */etc/sysconfig/modules/kvm.modules*: #!/bin/sh grep vmx /proc/cpuinfo >/dev/null 2>&1 && vmx=1 grep svm /proc/cpuinfo >/dev/null 2>&1 && svm=1 if [ "$vmx" ] || [ "$svm" ]; then [ "$vmx" ] && modprobe -b >/dev/null 2>&1 [ "$svm" ] && modprobe -b kvm-amd >/dev/null 2>&1 # no reason why vhost should not work with TCG, but currently it does not modprobe -b vhost-net >/dev/null 2>&1 else exit 0 fi Was modfied to look like: #!/bin/sh grep vmx /proc/cpuinfo >/dev/null 2>&1 && vmx=1 grep svm /proc/cpuinfo >/dev/null 2>&1 && svm=1 if [ "$vmx" ] || [ "$svm" ]; then [ "$vmx" ] && modprobe -b kvm-intel *emulate_invalid_guest_state=0* >/dev/null 2>&1 [ "$svm" ] && modprobe -b kvm-amd >/dev/null 2>&1 # no reason why vhost should not work with TCG, but currently it does not modprobe -b vhost-net >/dev/null 2>&1 else exit 0 fi And after *two* reboots(didn´t get set after the first reboot, strangly enough) the setting have been confirmed persistant with: # more /sys/module/kvm_intel/parameters/emulate_invalid_guest_state N The Host was again activated and the guest panics are gone. Thanks for the hint! /Karli _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users