Messages in this thread | | | Date | Thu, 10 Jun 2010 06:06:06 +0300 | From | Avi Kivity <> | Subject | Re: [RFC] para virt interface of perf to support kvm guest os statistics collection in guest os |
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On 06/10/2010 05:21 AM, Zhang, Yanmin wrote: > >> I see. So put it in a union. Or perhaps not even in a union - what if >> a kvm guest is also acting as a kvm host? >> > My patch has consideration on it. I compiled kernel with host and guest support > at the same time. The accessing to perf_event->shadow is really under specific > scenarios, or they are just in specific functions. These functions are called > just bu host kernel , or just by guest kernel. >
But a kernel can be both guest and host at the same time. Currently this only works on AMD, but there was some work to bring it to Intel as well.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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