Re: [PATCH] KVM: SVM: fix cr8 intercept window

2014-03-11 Thread Marcelo Tosatti
On Tue, Mar 11, 2014 at 07:11:18PM +0100, Radim Krčmář wrote: > We always disable cr8 intercept in its handler, but only re-enable it > if handling KVM_REQ_EVENT, so there can be a window where we do not > intercept cr8 writes, which allows an interrupt to disrupt a higher > priority task. > > Fix

Re: Linux 3.13: BUG: soft lockup - CPU#1 stuck for 22s! [qemu-kvm:2653]

2014-03-11 Thread Jason S. Wagner
Hi all, Over the weekend, Linux 3.13.6 was installed on my machine. When I started gnome-boxes on Monday morning, my VM halted during boot. Only a portion of the VESA BIOS init output was displayed on-screen before the halt. Backtraces occasionally appeared in dmesg (http://pastebin.com/uUiNL

[no subject]

2014-03-11 Thread Mohan Krishna
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[PATCH] KVM: SVM: fix cr8 intercept window

2014-03-11 Thread Radim Krčmář
We always disable cr8 intercept in its handler, but only re-enable it if handling KVM_REQ_EVENT, so there can be a window where we do not intercept cr8 writes, which allows an interrupt to disrupt a higher priority task. Fix this by disabling intercepts in the same function that re-enables them wh

Re: Enhancement for PLE handler in KVM

2014-03-11 Thread Paolo Bonzini
Il 11/03/2014 15:12, Li, Bin (Bin) ha scritto: - For the guest OS which doesn't use the hyper call interface, there will be no impact to them. The proposed ple handler enhancement has structured to use the hint only if the guest OS using the new proposed hyper call. And it is per

How to apply for Google Summer of Code

2014-03-11 Thread Stefan Hajnoczi
Dear students, Applications for Google Summer of Code opened on Monday, 10th of March and will continue until Friday, 21st of March. The common question we are getting is "How do I apply?" :). Here is the application checklist: 1. Choose a project idea and get in touch with the mentor. The proj

Re: Question about suspended virtual machine resources on a kvm hypervisor

2014-03-11 Thread Paolo Bonzini
Il 11/03/2014 09:10, William Heath ha scritto: So is the CPU re-allocated to other virtual machines that need them? In KVM, virtual CPUs are just threads; if a thread does not want to run, the Linux scheduler does not give it any CPU. If the virtual machine monitor you're using is QEMU, the

Re: Question about suspended virtual machine resources on a kvm hypervisor

2014-03-11 Thread William Heath
So is the CPU re-allocated to other virtual machines that need them? I take it then that RAM and disk usage are not reallocated? -Tim On Mon, Mar 10, 2014 at 9:49 PM, Paolo Bonzini wrote: > Il 10/03/2014 21:33, William Heath ha scritto: > >> Hi All, >> >> I am working with OnApp for a cloud solu

Re: Question about suspended virtual machine resources on a kvm hypervisor

2014-03-11 Thread Paolo Bonzini
Il 10/03/2014 21:33, William Heath ha scritto: Hi All, I am working with OnApp for a cloud solution. In order to do billing correctly, I am curious what resources are freed up when a virtual machine is suspended on a kvm hypervisor. Are cpu, ram, and disk all freed up or what is reallocated to

[Bug 67061] [BISECTED][Nested]L2 guest boot up fail(kvm on kvm).

2014-03-11 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=67061 Paolo Bonzini changed: What|Removed |Added Status|NEW |RESOLVED CC|