Re: Some Code for Performance Profiling

2010/4/5 Avi Kivity a...@redhat.com: On 03/31/2010 07:53 PM, Jiaqing Du wrote: Hi, We have some code about performance profiling in KVM. They are outputs of a school project. Previous discussions in KVM, Perfmon2, and Xen mailing lists helped us a lot. The code are NOT in a good shape

Some Code for Performance Profiling

Hi, We have some code about performance profiling in KVM. They are outputs of a school project. Previous discussions in KVM, Perfmon2, and Xen mailing lists helped us a lot. The code are NOT in a good shape and are only used to demonstrated the feasibility of doing performance profiling in KVM.

MSRs load/store

Hi List, My question is about VM-Exit VM-Entry controls for MSRs on Intel's processors. For VM-Exit, a VMM can specify lists of MSRs to be stored and loaded on VM exits. But for VM-Entry, a VMM can only specify a list of MSRs to be loaded on VM entries. Why does not the processor have the

Re: MSRs load/store

is missing. Thanks, Jiaqing 2009/12/7 Avi Kivity a...@redhat.com: On 12/07/2009 05:07 PM, Jiaqing Du wrote: Hi List, My question is about VM-Exit  VM-Entry controls for MSRs on Intel's processors. For VM-Exit, a VMM can specify lists of MSRs to be stored and loaded on VM exits. But for VM-Entry

Re: NMI Injection to Guest

not succeed. Thanks, Jiaqing 2009/7/30 Jiaqing Du jiaq...@gmail.com: Hi Gleb, My code works by setting vcpu-arch.nmi_pending = 1; inside vcpu_enter_guest(). Thanks, Jiaqing 2009/7/27 Gleb Natapov g...@redhat.com: On Sun, Jul 26, 2009 at 09:25:34PM +0200, Jiaqing Du wrote: Hi Gleb, Thanks

Re: NMI Injection to Guest

Hi Gleb, My code works by setting vcpu-arch.nmi_pending = 1; inside vcpu_enter_guest(). Thanks, Jiaqing 2009/7/27 Gleb Natapov g...@redhat.com: On Sun, Jul 26, 2009 at 09:25:34PM +0200, Jiaqing Du wrote: Hi Gleb, Thanks for your reply. 2009/7/26 Gleb Natapov g...@redhat.com: On Sat

Re: NMI Injection to Guest

Hi Gleb, Thanks for your reply. 2009/7/26 Gleb Natapov g...@redhat.com: On Sat, Jul 25, 2009 at 10:46:39PM +0200, Jiaqing Du wrote: Hi list, I'm trying to extend OProfile to support guest profiling. One step of my work is to push an NMI to the guest(s) when a performance counter overflows

NMI Injection to Guest

Hi list, I'm trying to extend OProfile to support guest profiling. One step of my work is to push an NMI to the guest(s) when a performance counter overflows. Please correct me if the following is not correct: counter overflow -- NMI to host -- VM exit -- int $2 to handle NMI on host -- ... --