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[Xen-bugs] [Bug 1717] New: [vt-d] Can not detach the device which was as

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Subject: [Xen-bugs] [Bug 1717] New: [vt-d] Can not detach the device which was assigned statically
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Date: Fri, 21 Jan 2011 02:49:56 -0800
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           Summary: [vt-d] Can not detach the device which was assigned
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Tools
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: shaohui.zheng@xxxxxxxxx

Service Arch (ia32/ia32e/IA64): IA32e
Guest Arch (ia32/ia32e/IA64): 
Guest OS Type (Linux/Windows): Linux
Change Set: xen-changeset:   22764:75b6287626ee
Hardware: WSM-EP & SNB
pvops dom0: 862ef97190f6b54d35c76c93fb2b8fadd7ab7d68
ioemu: 1c304816043c0ffe14d20d6006d6165cb7fddb9b

Bug detailed description:

Assign a device to guest statically, it chould be a PCIE/PCI NIC, PF, VF or USB
device. After guest OS is booting up, we can not detach if with command "xl
pci-detach dom_id bdf". it complains that guest does not own this device.

[root@vt-nhm7 ~]# xl pci-detach 26 01:10.4
libxl: error: libxl_pci.c:844:do_pci_remove PCI device not attached to this

Reproduce steps:

1. Assign a device to guest OS statically configure: 
pci = [ '01:10.4' ] 

2. Detach the device 

xl pci-detach 26 01:10.4

You will see this bug.

Current result:

Expected result:

Basic root-causing log:

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