Bug 903105

Summary:	xhci_runtime_read: reg 0x14 unimplemented
Product:	Red Hat Enterprise Linux 7	Reporter:	Suqin Huang <shuang>
Component:	qemu-kvm	Assignee:	Gerd Hoffmann <kraxel>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.0	CC:	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.