Public bug reported:
A restarted kvm client with a passthough pci device does not work
anymore (properly) with that device. The device does not seem to be re-
set properly.
If the KVM host is re-started the client one time starts properly with a
correctly functioning pci device, when the client is re-started (without
re-starting the kvm host) the pci device is not working properly.
Seen on device:
USB device with linux client (USB controller: ASMedia Technology Inc.
ASM1042 SuperSpeed USB Host Controller)
The device is implemented with MSI-X, as a test a keyboard is connected.
First boot client (on fresh start of KVM host):
The client is presented the pci USB device (usb 2.0 and usb 3.0) and the
keyboard is presented as well. The keyboard properly works.
Reboot:
The client is presented the pci USB device (usb 2.0 and usb 3.0), but no
keyboard is presented (it is plugged in). Disconnecting and re-connecting the
usb keyboard is not helping. Unregistering and re-registering with it's driver
(xhci_hcd) did not help. Trying to reset through "echo 1 > reset" within
/sys/devices/ did not help. Trying to use pci-config -s 03:00.0 -S and
pci-config -s 03:00.0 -W did not help.
I've been looking for a solution to get this working properly, but
failed so far to find a solution.
package used to start the client: libvirt (virsh and virt-manager)
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: kvm 1:84+dfsg-0ubuntu16+1.0+noroms+0ubuntu14.2
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Thu Oct 11 20:03:16 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
MachineType: To be filled by O.E.M. To be filled by O.E.M.
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-31-generic
root=UUID=2583ca5d-0a8a-46bc-b0c3-d8468dc2a421 ro quiet splash iommu=pt
vt.handoff=7
SourcePackage: qemu-kvm
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/12/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1102
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: SABERTOOTH 990FX
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1102:bd03/12/2012:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnSABERTOOTH990FX:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: To be filled by O.E.M.
** Affects: qemu-kvm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise
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https://bugs.launchpad.net/bugs/1065628
Title:
pci device not reset (passthrough)
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