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    SubjectRe: qemu-kvm loops after kernel udpate
    On 09/13/2012 11:59 AM, Avi Kivity wrote:
    > On 09/12/2012 09:11 PM, Jiri Slaby wrote:
    >> On 09/12/2012 10:18 AM, Avi Kivity wrote:
    >>> On 09/12/2012 11:13 AM, Jiri Slaby wrote:
    >>>>
    >>>>> Please provide the output of vmxcap
    >>>>> (http://goo.gl/c5lUO),
    >>>>
    >>>> Unrestricted guest no
    >>>
    >>> The big real mode fixes.
    >>>
    >>>
    >>>>
    >>>>> and a snapshot of kvm_stat while the guest is hung.
    >>>>
    >>>> kvm statistics
    >>>>
    >>>> exits 6778198 615942
    >>>> host_state_reload 1988 187
    >>>> irq_exits 1523 138
    >>>> mmu_cache_miss 4 0
    >>>> fpu_reload 1 0
    >>>
    >>> Please run this as root so we get the tracepoint based output; and press
    >>> 'x' when it's running so we get more detailed output.
    >>
    >> kvm statistics
    >>
    >> kvm_exit 13798699 330708
    >> kvm_entry 13799110 330708
    >> kvm_page_fault 13793650 330604
    >> kvm_exit(EXCEPTION_NMI) 6188458 330604
    >> kvm_exit(EXTERNAL_INTERRUPT) 2169 105
    >> kvm_exit(TPR_BELOW_THRESHOLD) 82 0
    >> kvm_exit(IO_INSTRUCTION) 6 0
    >
    > Strange, it's unable to fault in the very first page.
    >
    > Please provide a trace as per http://www.linux-kvm.org/page/Tracing (but
    > append -e kvmmmu to the command line).

    Attached. Does it make sense? It wrote things like:
    failed to read event print fmt for kvm_mmu_unsync_page
    to the stderr.

    thanks,
    --
    js
    suse labs
    version = 6
    CPU 0 is empty
    cpus=2
    qemu-kvm-6170 [001] 457.811896: kvm_mmu_get_page: [FAILED TO PARSE] gfn=0 role=122882 root_count=0 unsync=0 created=1
    qemu-kvm-6170 [001] 457.811899: kvm_mmu_get_page: [FAILED TO PARSE] gfn=262144 role=122882 root_count=0 unsync=0 created=1
    qemu-kvm-6170 [001] 457.811900: kvm_mmu_get_page: [FAILED TO PARSE] gfn=524288 role=122882 root_count=0 unsync=0 created=1
    qemu-kvm-6170 [001] 457.811902: kvm_mmu_get_page: [FAILED TO PARSE] gfn=786432 role=122882 root_count=0 unsync=0 created=1
    qemu-kvm-6171 [001] 462.416705: kvm_mmu_prepare_zap_page: [FAILED TO PARSE] gfn=786432 role=122882 root_count=1 unsync=0
    qemu-kvm-6171 [001] 462.416712: kvm_mmu_prepare_zap_page: [FAILED TO PARSE] gfn=524288 role=122882 root_count=1 unsync=0
    qemu-kvm-6171 [001] 462.416715: kvm_mmu_prepare_zap_page: [FAILED TO PARSE] gfn=262144 role=122882 root_count=1 unsync=0
    qemu-kvm-6171 [001] 462.416717: kvm_mmu_prepare_zap_page: [FAILED TO PARSE] gfn=0 role=122882 root_count=1 unsync=0
    qemu-kvm-6171 [001] 462.485197: kvm_mmu_prepare_zap_page: [FAILED TO PARSE] gfn=0 role=253954 root_count=0 unsync=0
    qemu-kvm-6171 [001] 462.485202: kvm_mmu_prepare_zap_page: [FAILED TO PARSE] gfn=262144 role=253954 root_count=0 unsync=0
    qemu-kvm-6171 [001] 462.485205: kvm_mmu_prepare_zap_page: [FAILED TO PARSE] gfn=524288 role=253954 root_count=0 unsync=0
    qemu-kvm-6171 [001] 462.485209: kvm_mmu_prepare_zap_page: [FAILED TO PARSE] gfn=786432 role=253954 root_count=0 unsync=0
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      Last update: 2012-09-13 21:21    [W:4.254 / U:0.008 seconds]
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