On Thu, Jan 12, 2012 at 07:02:12AM -0700, David Ahern wrote: > > On 01/11/2012 11:26 PM, Gleb Natapov wrote: > > On Wed, Jan 11, 2012 at 01:47:55PM -0700, David Ahern wrote: > >> Using latest kernel tree (e343a895a9f342f239c5e3c5ffc6c0b1707e6244) > >> which has KVM bits for using PMU in the guest. Host and guest are both > >> running Fedora 16, 64-bit, with this kernel. > >> > >> Running this command in the guest: > >> perf stat -ddd -- openssl speed aes > >> > >> Generates this in the host: > >> [74728.221863] kvm_set_msr_common: 2760 callbacks suppressed > >> [74728.221950] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 > >> [74728.222115] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 > >> [74728.222858] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 > >> [74728.223018] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 > >> [74728.223851] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 > >> [74728.224009] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 > >> [74728.224843] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 > >> [74728.224997] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 > >> [74728.225842] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f001 > >> [74728.226010] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f001 > >> > > This is MSR_OFFCORE_RSP_0 MSR which is not (yet?) supported. What is > > your host cpu and qemu command line? > > Host CPU: Intel(R) Xeon(R) CPU E5540 @ 2.53GHz > and '-cpu host' is used on the qemu command line. > Use "-cpu host,model=29" should avid this message. We need to teach guest to not use non architectural MSRs. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
