Re: [Qemu-devel] Nested KVM L2 guest hangs

2015-01-23 Thread Chris J Arges
Ariel, You can easily use a supported 3.16 kernel on Ubuntu 14.04: sudo apt-get install --install-recommends linux-generic-lts-utopic If you have further problems with 3.16 or 3.13 on the distro kernel please feel free to file a bug: https://bugs.launchpad.net/ubuntu/+filebug Hope that helps.

Re: [Qemu-devel] Nested KVM L2 guest hangs

2015-01-09 Thread Ariel Zeitlin
Hi, Paolo We are using a pretty new kernel 3.13.0-43 as part of Ubuntu14.04. What version would you recommend? Do we need the upgrade on L0, L1 or both? Thanks, Ariel ‏בתאריך יום שישי, 9 בינואר 2015, Paolo Bonzini pbonz...@redhat.com כתב: On 09/01/2015 15:08, Ariel Zeitlin wrote: At the

Re: [Qemu-devel] Nested KVM L2 guest hangs

2015-01-09 Thread Paolo Bonzini
On 09/01/2015 16:30, Ariel Zeitlin wrote: Hi, Paolo We are using a pretty new kernel 3.13.0-43 as part of Ubuntu14.04. What version would you recommend? At least 3.16. 3.13 is about a year old, and nested virtualization is a very new feature. Do we need the upgrade on L0, L1 or both?

Re: [Qemu-devel] Nested KVM L2 guest hangs

2015-01-09 Thread Ariel Zeitlin
Thanks, will try that ‏בתאריך יום שישי, 9 בינואר 2015, Paolo Bonzini pbonz...@redhat.com כתב: On 09/01/2015 16:30, Ariel Zeitlin wrote: Hi, Paolo We are using a pretty new kernel 3.13.0-43 as part of Ubuntu14.04. What version would you recommend? At least 3.16. 3.13 is about a

[Qemu-devel] Nested KVM L2 guest hangs

2015-01-09 Thread Ariel Zeitlin
Hi, all I am trying to use nested virtualization setup and experiencing L2 guest (Windows) hanging during boot. I have seen some threads about it, but did not manage to make sense of how can I work around it. Would appreciate any guidance for a solution or workaround. Thanks, Ariel Some details

Re: [Qemu-devel] Nested KVM L2 guest hangs

2015-01-09 Thread Paolo Bonzini
On 09/01/2015 15:08, Ariel Zeitlin wrote: At the time of the hanging this line is added: nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported You have to try with a newer kernel. Paolo