[Qemu-devel] failed to install win2008 with usb, qemu report: cpage out of range(EHCI)

[袁仲]

I use qemu-2.5.0.

This is a part of my xml:
......

  <vcpu placement='static' current="1">64</vcpu>

  <cpu>

    <topology sockets='4' cores='8' threads='2'/>

      <numa>

          <cell cpus='0-3' memory='524288'/>

          <cell cpus='4-7' memory='524288'/>

      </numa>

  </cpu>

.....

    <hostdev mode='subsystem' type='usb' managed='yes'>

      <source missing='yes'>

        <address bus='1' device='5'/>

      </source>

      <address type='usb' bus='0' port='4'/>

    </hostdev>

....

and this xml will failed to install win2008 with usb, and qemu reports in
its log: cpage out of range(EHCI) 。

but if the part of xml above:  <vcpu placement='static' current="1">64</vcpu>
  changes to  <vcpu placement='static' cpuset='0-1' current="1">64</vcpu> ,
and other part of xml stay the same.

Then it works, I can install win2008 with usb successfully.


I change my qemu to 2.8.0, and the first xml can work too, but I don't know
the reason, and which part of qemu code fix this bug.


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