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Bug 903105

Summary: xhci_runtime_read: reg 0x14 unimplemented
Product: Red Hat Enterprise Linux 7 Reporter: Suqin Huang <shuang>
Component: qemu-kvmAssignee: Gerd Hoffmann <kraxel>
Status: CLOSED CURRENTRELEASE QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.0CC: acathrow, hhuang, juzhang, michen, mrezanin, pbonzini, sluo, virt-maint, xfu
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: qemu-kvm-1.5.0-1.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-06-13 09:19:41 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Suqin Huang 2013-01-23 08:06:48 UTC 
Description of problem:
"xhci_runtime_read: reg 0x1c unimplemented xhci_port_write (port 4): reg 0x4 unimplemented" error while boot guest with xhci controller.

Version-Release number of selected component (if applicable):
qemu-kvm-1.3.0-3.el7.x86_64
seabios-1.7.2-0.2.gita810e4e7.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. boot guest
cmd

/usr/libexec/qemu-kvm -nodefaults -drive file='/home/autotest-devel/client/tests/kvm/images/RHEL-Server-6.4-64.qcow2',if=none,id=disk1,media=disk,cache=none,format=qcow2,aio=native -device ide-drive,bus=ide.0,drive=disk1 -device virtio-net-pci,netdev=idUMvixC,mac=9a:87:88:89:8a:8b,bus=pci.0,addr=0x3,id='idMztaHV' -netdev tap,id=idUMvixC,vhost=on,script=/home/autotest-devel/client/virt/scripts/qemu-ifup-switch -m 2048 -smp 2,cores=1,threads=1,sockets=2 -cpu 'Opteron_G3' -vnc :0 -vga cirrus -rtc base=utc,clock=host,driftfix=slew  -boot order=cdn,once=c,menu=off   -no-kvm-pit-reinjection -enable-kvm -monitor stdio -acpitable file=/root/seabios-rhel7/out/q35-acpi-dsdt.aml -M pc \
 -device nec-usb-xhci,bus=pci.0,id=xhci0,addr=0x6

2.
3.
  
Actual results:


Expected results:


Additional info:

1. error in qemu monitor
 xhci_runtime_read: reg 0x4 unimplemented
xhci_runtime_read: reg 0x8 unimplemented
xhci_runtime_read: reg 0xc unimplemented
xhci_runtime_read: reg 0x10 unimplemented
xhci_runtime_read: reg 0x14 unimplemented
xhci_runtime_read: reg 0x18 unimplemented
xhci_runtime_read: reg 0x1c unimplemented
xhci_port_write (port 4): reg 0x4 unimplemented
xhci_port_write (port 3): reg 0x4 unimplemented
xhci_port_write (port 2): reg 0x4 unimplemented
xhci_port_write (port 1): reg 0x4 unimplemented

2. dmesg
[438179.191211] device tap0 entered promiscuous mode
[438179.191265] switch: port 2(tap0) entered forwarding state
[438179.191269] switch: port 2(tap0) entered forwarding state
[438186.011234] kvm [30990]: vcpu0 unhandled rdmsr: 0xc001100d
[438186.018164] kvm [30990]: vcpu0 unhandled rdmsr: 0xc0010112
[438186.186866] kvm [30990]: vcpu0 unhandled rdmsr: 0xc0010001
[438186.211434] kvm [30990]: vcpu1 unhandled rdmsr: 0xc001100d
Comment 2 Gerd Hoffmann 2013-03-20 13:31:54 UTC 
Will turn message into a tracepoint, planned for qemu 1.5.
Comment 3 Gerd Hoffmann 2013-05-14 14:10:18 UTC 
upstream commit 0ab966cfcc7000baa2e7ef6df7771e73a2eb8a88
Comment 4 Miroslav Rezanina 2013-05-23 11:59:03 UTC 
Build in qemu-kvm-1.5.0-1.el7
Comment 5 Sibiao Luo 2013-07-02 06:56:49 UTC 
Reproduce this issue on qemu-kvm-1.4.0-4.el7.x86_64.
step:
the same to comment#0.
result:
error in qemu monitor.
xhci_runtime_read: reg 0x4 unimplemented
xhci_runtime_read: reg 0x8 unimplemented
xhci_runtime_read: reg 0xc unimplemented
xhci_runtime_read: reg 0x10 unimplemented
xhci_runtime_read: reg 0x14 unimplemented
xhci_runtime_read: reg 0x18 unimplemented
xhci_runtime_read: reg 0x1c unimplemented
xhci_port_write (port 4): reg 0x4 unimplemented
xhci_port_write (port 3): reg 0x4 unimplemented
xhci_port_write (port 2): reg 0x4 unimplemented
xhci_port_write (port 1): reg 0x4 unimplemented

Verify this issue on qemu-kvm-1.5.1-1.el7.x86_64.
step:
the same to comment#0.
result:
there is no any error in HMP monitor and guest dmesg when do boot/reboot/system_reset with xhci controller.

Base on above, this issue has been fixed correctly.
Comment 6 Ludek Smid 2014-06-13 09:19:41 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.