Messages in this thread | | | Date | Tue, 02 Dec 2008 22:56:31 +0200 | From | Avi Kivity <> | Subject | Re: [BUG] kvm crashes in 2.6.28-rc6-00007-ged31348 |
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Steven Rostedt wrote:
>> In arch/x86/kvm/svm.c, function svm_vcpu_run(), everything between the >> vmrun instruction and the call to load_host_msrs() is executed without a >> live pda, so no smp_processor_id(). Could easily be fixed by >> rearranging things. >> > > That would be best, but if you have trouble, you could surround the > trouble area with a: tracing_stop(); tracing_start(); That will prevent > tracing within those locations. The function tracer will still be > called, but it will exit the function without doing anything else. > > Note: that stops tracing on all CPUS, not just the CPU that called it. >
The vmrun instruction can execute for a long time (hours, if you have a dyntick kernel and no timers scheduled), so that's less than optimal.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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