On 06/14/2011 11:33 AM, David Ahern wrote:
> Avi: still no luck:
> [ 0.047996] Performance Events: unsupported p6 CPU model 0 no PMU
> driver, software events only.
>
> qemu-kvm next branch, ce5f0a588b740e8f28f46a6009e12cfa72edc51f with your
> perfmon cpuid change. Host and guest are both running your kvm next
> branch with pmu patch series.
The perf init code is going down the !perfmon route:
if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
switch (boot_cpu_data.x86) {
case 0x6:
return p6_pmu_init();
case 0xf:
return p4_pmu_init();
}
return -ENODEV;
}
Based on Patch 2 you are expecting the guest to have this feature set.
I've tried +perfmon and +arch_perfmon in the cpu definition for qemu-kvm
(e.g., -cpu host,model=0,+perfmon) no luck
David
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