[ kvm-Bugs-2832416 ] Hot-added device is not visible in guest after migration

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Bugs item #2832416, was opened at 2009-08-05 09:49
Message generated for change (Comment added) made by haoxudong
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2832416&group_id=180599

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Category: kernel
Group: None
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Jiajun Xu (jiajun)
Assigned to: Nobody/Anonymous (nobody)
Summary: Hot-added device is not visible in guest after migration

Initial Comment:
Environment:
------------
Kernel Commit:7391a6d5118792baad4c518363aaae0d54d009e6
Userspace Commit:14cd1fdede96646992fc1f9731d3e367f0807ef0
Host Kernel Version: 2.6.29-rc5

Bug detailed description:
--------------------------
After guest migration, hot-add a device to the target guest, the command can be executed without error. The assigned device can be seen by command "scanpci" in guest while lspci can not find the added device. 


Reproduce steps:
----------------
1. Boot a KVM guest without device assigned
2. Live Migrate the guest
3. After LM, hot-add device into the guest. Device not visiable in guest

----------------------------------------------------------------------

>Comment By: Xudong Hao (haoxudong)
Date: 2010-06-29 14:56

Message:
Verified this bug on kvm-commit:
cfe149e91b823a75eb7a86e81bfa7c6fce42c744, qemu-kvm:
bc3a9ccc5ddea4c0c713ef6fb3c11d9a88cec169. 

After the guest migration, we hot add a PCI NIC device with command in
qemu monitor: "device_add pci-assign,host=00:19.0,id=my_nic", guest network
works fine on this NIC.


----------------------------------------------------------------------

Comment By: Xudong Hao (haoxudong)
Date: 2010-06-11 09:57

Message:
There is fix patch in qemu upstream tree.

https://bugzilla.redhat.com/show_bug.cgi?id=598022

--- Comment #2 from Alex Williamson <alex.williamson@xxxxxxxxxx>
2010-06-07
11:14:54 EDT --- patch posted upstream -
http://lists.nongnu.org/archive/html/qemu-devel/2010-06/msg00301.html

----------------------------------------------------------------------

Comment By: Jiajun Xu (jiajun)
Date: 2009-08-05 10:17

Message:
Change the title

----------------------------------------------------------------------

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https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2832416&group_id=180599
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