[Bug 43328] New: VT-d/SR-IOV doesn't work in guest

[Bug 43328] New: VT-d/SR-IOV doesn't work in guest

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43328

           Summary: VT-d/SR-IOV doesn't work in guest
           Product: Virtualization
           Version: unspecified
    Kernel Version: 3.4.0
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: kvm
        AssignedTo: virtualization_kvm@kernel-bugs.osdl.org
        ReportedBy: yongjie.ren@intel.com
                CC: avi@redhat.com
        Regression: No


Environment:
------------
Host OS (ia32/ia32e/IA64):ia32e
Guest OS (ia32/ia32e/IA64):ia32e
Guest OS Type (Linux/Windows):Linux
kvm.git Commit:b48b2c3e50433ff6f7e46186daa7f986bd960215
qemu-kvm Commit:18a188f66237e7b38fc8133d3862e5904c0e7ffb
Host Kernel Version:3.4.0
Hardware:WSM-EP, Romley-EP


Bug detailed description:
--------------------------
Assign a VF or normal NIC to the guest, the guest cannot get IP address.
Note:1. assign the VF of  Intel 82576 NIC or 82599 NIC, the guest cannot get IP
     2. hot plug a VF to the guest, the guest cannot get IP
     3. assign a PF to the guest, the guest cannot get IP.


kvm(next) + qemu-kvm   =  result
b48b2c3e + 18a188f6   =  bad 
322728e5 + 18a188f6   =  good



Reproduce steps:
----------------
1. ./pcistub.sh -h 08:10.0   ( to hide a device)
2. qemu-system-x86_64 -m 512 -device pci-assign,host=08:10.0 -net none -hda
rhel6u1.qcow

Current result:
----------------
The guest cannot get IP

Expected result:
----------------
The guest can get IP

Basic root-causing log:
----------------------
[root@vt-snb9 ~]# qemu-system-x86_64 -m 512 -device pci-assign,host=08:10.0
-net none -hda rhel6u1.qcow 
VNC server running on `::1:5900'
assigned_dev_enable_msix: assign irq: Invalid argument
fail to set MSI-X entry number for MSIX! Invalid argument
assigned_dev_update_msix_mmio: Invalid argument
fail to set MSI-X entry number for MSIX! Invalid argument
assigned_dev_update_msix_mmio: Invalid argument

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[Bug 43328] VT-d/SR-IOV doesn't work in guest

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43328





--- Comment #1 from Jay Ren <yongjie.ren@intel.com>  2012-06-01 07:23:46 ---
Created an attachment (id=73483)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73483)
guest lspci log

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[Bug 43328] VT-d/SR-IOV doesn't work in guest

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43328





--- Comment #2 from Jay Ren <yongjie.ren@intel.com>  2012-06-01 07:24:09 ---
Created an attachment (id=73484)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73484)
host lspci log

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[Bug 43328] VT-d/SR-IOV doesn't work in guest

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43328





--- Comment #3 from Jay Ren <yongjie.ren@intel.com>  2012-06-01 07:25:22 ---
Created an attachment (id=73485)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73485)
guest dmesg log

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[Bug 43328] VT-d/SR-IOV doesn't work in guest

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43328





--- Comment #4 from Jay Ren <yongjie.ren@intel.com>  2012-06-01 07:25:47 ---
Created an attachment (id=73486)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73486)
host dmesg log

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[Bug 43328] VT-d/SR-IOV doesn't work in guest

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=43328


Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |florian@mickler.org




--- Comment #5 from Florian Mickler <florian@mickler.org>  2012-07-25 19:36:03 ---
A patch referencing this bug report has been merged in Linux v3.5-rc7:

commit a76beb14123a69ca080f5a5425e28b786d62318d
Author: Alex Williamson <alex.williamson@redhat.com>
Date:   Mon Jul 9 10:53:22 2012 -0600

    KVM: Fix device assignment threaded irq handler

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[Bug 43328] VT-d/SR-IOV doesn't work in guest

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https://bugzilla.kernel.org/show_bug.cgi?id=43328


Jay Ren <yongjie.ren@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |CODE_FIX




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[Bug 43328] VT-d/SR-IOV doesn't work in guest

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https://bugzilla.kernel.org/show_bug.cgi?id=43328


Jay Ren <yongjie.ren@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |VERIFIED




--- Comment #6 from Jay Ren <yongjie.ren@intel.com>  2012-08-10 06:55:12 ---
I verified it based on Linux v3.5 tag. As comment #5 said, this bug has been
fixed.
Marked it as "verified".

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[Bug 43328] VT-d/SR-IOV doesn't work in guest

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https://bugzilla.kernel.org/show_bug.cgi?id=43328


Jay Ren <yongjie.ren@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|VERIFIED                    |CLOSED




--- Comment #7 from Jay Ren <yongjie.ren@intel.com>  2012-08-10 06:57:48 ---
Verified, so let's close it.

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