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Description of problem: host dmesg shows warnning "kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL does not work properly. Using workaround" Version-Release number of selected component (if applicable): 2.6.32-251.el6.x86_64 How reproducible: 2 / 2 Steps to Reproduce: 1.install a rhel6 with kernel 2.6.32-251.el6.x86_64 2.# dmesg | grep -i kvm kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL does not work properly. Using workaround kvm: already loaded the other module 3. Actual results: host dmesg shows warnning "kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL does not work properly. Using workaround" for now, it didn't harm my tests. but no knowing if it will, if this warnning is expected. pls close this bug. Expected results: not warning or ? Additional info: ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 CPU0: Intel(R) Xeon(R) CPU E5530 @ 2.40GHz stepping 05 Performance Events: PEBS fmt1+, erratum AAJ80 worked around, Nehalem events, Intel PMU driver. ... version: 3 ... bit width: 48 ... generic registers: 4 ... value mask: 0000ffffffffffff ... max period: 000000007fffffff ... fixed-purpose events: 3 ... event mask: 000000070000000f Booting Node 0, Processors #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 #12 #13 #14 #15 Brought up 16 CPUs Total of 16 processors activated (76596.03 BogoMIPS).
Hi gleb, Can you have a look this bug. Thanks Suqin
This message it OK. It means host CPU has an erratum and code works around it.