New: VT-d/SR-IOV doesn't work in guest
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: [email protected]
ReportedBy: [email protected]
CC: [email protected]
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
https://bugzilla.kernel.org/show_bug.cgi?id=43328
--- Comment #1 from Jay Ren <[email protected]> 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
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43328
--- Comment #2 from Jay Ren <[email protected]> 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
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43328
--- Comment #3 from Jay Ren <[email protected]> 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
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43328
--- Comment #4 from Jay Ren <[email protected]> 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
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43328
Florian Mickler <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]
--- Comment #5 from Florian Mickler <[email protected]> 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 <[email protected]> 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
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43328
Jay Ren <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |CODE_FIXSignature · 3 lines
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[Bug 43328] VT-d/SR-IOV doesn't work in guest
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43328
Jay Ren <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |VERIFIED
--- Comment #6 from Jay Ren <[email protected]> 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
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43328
Jay Ren <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|VERIFIED |CLOSED
--- Comment #7 from Jay Ren <[email protected]> 2012-08-10 06:57:48 --- Verified, so let's close it.
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