Console is not working with 2.6.38.4 Dom0 and Xen unstable

Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Wei Liu]

Hi,

I'm building my development with Debian Squeeze, Xen unstable and the
latest 2.6.38.4 kernel.

According to Xen wiki page, graphic subsystem is not working with
2.6.38 [1], so I disable GDM. I also set up various Xen and Linux
debug options, now that my grub entry looks like:

--- start of grub config ---
multiboot  /boot/xen-4.gz com1=115200,8n1 console=com1,vga
sync_console console_to_ring loglvl=all guest_loglvl=all noreboot
lapic=debug apic_verbosity=debug apic=debug iommu=off

module  /boot/vmlinuz-2.6.38.4-liuw+ console=hvc0,vga earlyprintk=xen
nomodeset initcall_debug debug loglevel=10
root=UUID=fd49322b-830f-44d2-8bdf-de5c355bb159 ro  quiet
--- end of grub config ---

Another thing I do is setup a serial tty in /etc/inittab, which looks like:

--- start of inittab ---
s0:2345:respawn:/sbin/getty 115200 ttyS0
--- end of inittab ---

After Xen relinquishes the VGA console, the screen goes black. Serial
line has some output, but no login prompt is showed.

However, I can login with SSH. Everything works fine.

So it seems that the VGA console and serial console are not working
properly. Any suggestions?

[1] http://wiki.xensource.com/xenwiki/XenPVOPSDRM

-- 
Best regards
Wei Liu
Twitter: @iliuw
Site: http://liuw.name

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Pasi Kärkkäinen]

On Sat, Apr 30, 2011 at 05:13:19PM +0800, Wei Liu wrote:
> Hi,
> 
> I'm building my development with Debian Squeeze, Xen unstable and the
> latest 2.6.38.4 kernel.
> 
> According to Xen wiki page, graphic subsystem is not working with
> 2.6.38 [1], so I disable GDM. I also set up various Xen and Linux
> debug options, now that my grub entry looks like:
> 
> --- start of grub config ---
> multiboot  /boot/xen-4.gz com1=115200,8n1 console=com1,vga
> sync_console console_to_ring loglvl=all guest_loglvl=all noreboot
> lapic=debug apic_verbosity=debug apic=debug iommu=off
> 
> module  /boot/vmlinuz-2.6.38.4-liuw+ console=hvc0,vga earlyprintk=xen
> nomodeset initcall_debug debug loglevel=10
> root=UUID=fd49322b-830f-44d2-8bdf-de5c355bb159 ro  quiet
> --- end of grub config ---
> 

You've configured Xen hypervisor (xen.gz) to use the serial port as a console,
do you get XEN output on the serial? If not, the settings are wrong.

For dom0 linux kernel you've specified to use the hypervisor (hvc0) as a console. 
So dom0 linux kernel messages should go to the serial through Xen.

> Another thing I do is setup a serial tty in /etc/inittab, which looks like:
> 
> --- start of inittab ---
> s0:2345:respawn:/sbin/getty 115200 ttyS0
> --- end of inittab ---
> 

Not sure if you can use ttyS0 from dom0 since Xen is already using it..


> After Xen relinquishes the VGA console, the screen goes black. Serial
> line has some output, but no login prompt is showed.
> 

What output exactly?

> However, I can login with SSH. Everything works fine.
> 

So dom0 starts fine. Just settings are wrong.

> So it seems that the VGA console and serial console are not working
> properly. Any suggestions?
> 
> [1] http://wiki.xensource.com/xenwiki/XenPVOPSDRM
> 


-- Pasi

> -- 
> Best regards
> Wei Liu
> Twitter: @iliuw
> Site: http://liuw.name
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Wei Liu]

On Sat, Apr 30, 2011 at 5:59 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:
> You've configured Xen hypervisor (xen.gz) to use the serial port as a console,
> do you get XEN output on the serial? If not, the settings are wrong.
>
> For dom0 linux kernel you've specified to use the hypervisor (hvc0) as a console.
> So dom0 linux kernel messages should go to the serial through Xen.
>

I got Xen output from the serial.

> What output exactly?
>

Things like populating /dev, SSH daemon starting, Apache starting,
etc. Just normal messages that show up when the system is booting. No
error is showed.

I'm pretty sure that Dom0 is running normally. I will check my settings.

-- 
Best regards
Wei Liu
Twitter: @iliuw
Site: http://liuw.name

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Pasi Kärkkäinen]

On Sat, Apr 30, 2011 at 06:27:35PM +0800, Wei Liu wrote:
> On Sat, Apr 30, 2011 at 5:59 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:
> > You've configured Xen hypervisor (xen.gz) to use the serial port as a console,
> > do you get XEN output on the serial? If not, the settings are wrong.
> >
> > For dom0 linux kernel you've specified to use the hypervisor (hvc0) as a console.
> > So dom0 linux kernel messages should go to the serial through Xen.
> >
> 
> I got Xen output from the serial.
> 

Ok, so that works.

> > What output exactly?
> >
> 
> Things like populating /dev, SSH daemon starting, Apache starting,
> etc. Just normal messages that show up when the system is booting. No
> error is showed.
> 
> I'm pretty sure that Dom0 is running normally. I will check my settings.
> 

So you're probably just missing a getty for hvc0 ? 

-- Pasi

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Wei Liu]

On Sat, Apr 30, 2011 at 6:41 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:
> So you're probably just missing a getty for hvc0 ?
>

I just tried. Login prompt shows up in serial console, but it doesn't
react to my key strokes. VGA console has no login prompt.

I tried two configs:

/sbin/getty 115200 hvc0
/sbin/getty -L 115200 hvc0 vt100

If you have any working grub config, could you please share it with me?

-- 
Best regards
Wei Liu
Twitter: @iliuw
Site: http://liuw.name

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Pasi Kärkkäinen]

On Sat, Apr 30, 2011 at 07:17:54PM +0800, Wei Liu wrote:
> On Sat, Apr 30, 2011 at 6:41 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:
> > So you're probably just missing a getty for hvc0 ?
> >
> 
> I just tried. Login prompt shows up in serial console, but it doesn't
> react to my key strokes. VGA console has no login prompt.
> 
> I tried two configs:
> 
> /sbin/getty 115200 hvc0
> /sbin/getty -L 115200 hvc0 vt100
> 
> If you have any working grub config, could you please share it with me?
> 

An example that works for me:

title        pv_ops dom0 (2.6.32.36) with serial console
root         (hd0,0)
kernel       /xen-4.0.gz dom0_mem=1024M loglvl=all guest_loglvl=all sync_console console_to_ring com1=57600,8n1 console=com1
module       /vmlinuz-2.6.32.36 ro root=/dev/vg00/lv01 console=hvc0 earlyprintk=xen nomodeset
module       /initrd-2.6.32.36.img


-- Pasi

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Wei Liu]

I test with various command line options, along with Konrad's [1] and
Jeremy's [2] kernel. It's still blank.

Konrad's kernel is 2.6.39-rc4, runs well on bare metal, blank screen
on Xen unstable.

Jeremy's kernel is 2.6.32.39, assertion fails with
boot_cpu_has(X86_FEATURE_TSC_RELIABLE) when booting on Xen unstable.

I also skim hvc_xen.c, the Dom0 console operations are straight
forward -- they are just wrapper of console IO hypercall.

Is that a hardware-related problem?

------ output of lspci -vvv ------

00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
	Subsystem: Lenovo Device 3047
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort+ >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: <access denied>
	Kernel driver in use: agpgart-intel

00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset
Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at fc000000 (64-bit, non-prefetchable) [size=4M]
	Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
	Region 4: I/O ports at 1c70 [size=8]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: <access denied>

00:02.1 Display controller: Intel Corporation 4 Series Chipset
Integrated Graphics Controller (rev 03)
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Region 0: Memory at fc400000 (64-bit, non-prefetchable) [size=1M]
	Capabilities: <access denied>

00:03.0 Communication controller: Intel Corporation 4 Series Chipset
HECI Controller (rev 03)
	Subsystem: Lenovo Device 3047
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx+
	Latency: 0
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at fc524000 (64-bit, non-prefetchable) [size=16]
	Capabilities: <access denied>

00:03.2 IDE interface: Intel Corporation 4 Series Chipset PT IDER
Controller (rev 03) (prog-if 85 [Master SecO PriO])
	Subsystem: Lenovo Device 3047
	Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin C routed to IRQ 5
	Region 0: I/O ports at 1c88 [disabled] [size=8]
	Region 1: I/O ports at 1c7c [disabled] [size=4]
	Region 2: I/O ports at 1c80 [disabled] [size=8]
	Region 3: I/O ports at 1c78 [disabled] [size=4]
	Region 4: I/O ports at 1c40 [disabled] [size=16]
	Capabilities: <access denied>

00:03.3 Serial controller: Intel Corporation 4 Series Chipset Serial
KT Controller (rev 03) (prog-if 02 [16550])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 17
	Region 0: I/O ports at 1c90 [size=8]
	Region 1: Memory at fc526000 (32-bit, non-prefetchable) [size=4K]
	Capabilities: <access denied>
	Kernel driver in use: serial

00:19.0 Ethernet controller: Intel Corporation 82567LM-3 Gigabit
Network Connection (rev 02)
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 43
	Region 0: Memory at fc500000 (32-bit, non-prefetchable) [size=128K]
	Region 1: Memory at fc527000 (32-bit, non-prefetchable) [size=4K]
	Region 2: I/O ports at 1820 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: e1000e

00:1a.0 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family)
USB UHCI Controller #4 (rev 02) (prog-if 00 [UHCI])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 4: I/O ports at 1840 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1a.1 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family)
USB UHCI Controller #5 (rev 02) (prog-if 00 [UHCI])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 17
	Region 4: I/O ports at 1860 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1a.2 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family)
USB UHCI Controller #6 (rev 02) (prog-if 00 [UHCI])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin C routed to IRQ 18
	Region 4: I/O ports at 1880 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1a.7 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family)
USB2 EHCI Controller #2 (rev 02) (prog-if 20 [EHCI])
	Subsystem: Lenovo Device 3047
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin C routed to IRQ 18
	Region 0: Memory at fc528000 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:1b.0 Audio device: Intel Corporation 82801JD/DO (ICH10 Family) HD
Audio Controller (rev 02)
	Subsystem: Lenovo Device 3047
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 44
	Region 0: Memory at fc520000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: HDA Intel

00:1d.0 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family)
USB UHCI Controller #1 (rev 02) (prog-if 00 [UHCI])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 4: I/O ports at 18a0 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1d.1 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family)
USB UHCI Controller #2 (rev 02) (prog-if 00 [UHCI])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 17
	Region 4: I/O ports at 18c0 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1d.2 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family)
USB UHCI Controller #3 (rev 02) (prog-if 00 [UHCI])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin C routed to IRQ 18
	Region 4: I/O ports at 18e0 [size=32]
	Capabilities: <access denied>
	Kernel driver in use: uhci_hcd

00:1d.7 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family)
USB2 EHCI Controller #1 (rev 02) (prog-if 20 [EHCI])
	Subsystem: Lenovo Device 3047
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at fc529000 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a2)
(prog-if 01 [Subtractive decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Bus: primary=00, secondary=11, subordinate=11, sec-latency=32
	I/O behind bridge: 0000f000-00000fff
	Memory behind bridge: fff00000-000fffff
	Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
	Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>

00:1f.0 ISA bridge: Intel Corporation 82801JDO (ICH10DO) LPC Interface
Controller (rev 02)
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: <access denied>

00:1f.2 SATA controller: Intel Corporation 82801JD/DO (ICH10 Family)
SATA AHCI Controller (rev 02) (prog-if 01 [AHCI 1.0])
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 42
	Region 0: I/O ports at 1ca8 [size=8]
	Region 1: I/O ports at 1c9c [size=4]
	Region 2: I/O ports at 1ca0 [size=8]
	Region 3: I/O ports at 1c98 [size=4]
	Region 4: I/O ports at 1c00 [size=32]
	Region 5: Memory at fc52a000 (32-bit, non-prefetchable) [size=2K]
	Capabilities: <access denied>
	Kernel driver in use: ahci

00:1f.3 SMBus: Intel Corporation 82801JD/DO (ICH10 Family) SMBus
Controller (rev 02)
	Subsystem: Lenovo Device 3047
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin B routed to IRQ 17
	Region 0: Memory at fc52b000 (64-bit, non-prefetchable) [size=256]
	Region 4: I/O ports at 1c20 [size=32]
	Kernel driver in use: i801_smbus

------ end of output ------

[1] git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git
[2] git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git

-- 
Best regards
Wei Liu
Twitter: @iliuw
Site: http://liuw.name

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Wei Liu]

Finally, I manage to get a working serial console with much tuning.

To wrap it up, getty for hvc0 and correct flow-control option are necessary.

But I'm still interested in a working VGA console. I'll get to that later. :)

Thank you for your help, Pasi.

-- 
Best regards
Wei Liu
Twitter: @iliuw
Site: http://liuw.name

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Konrad Rzeszutek Wilk]

On Mon, May 02, 2011 at 07:31:21PM +0800, Wei Liu wrote:
> I test with various command line options, along with Konrad's [1] and
> Jeremy's [2] kernel. It's still blank.

For the Intel graphic cards to work, you need CONFIG_DMAR to be set.
Do you have that?
> 
> Konrad's kernel is 2.6.39-rc4, runs well on bare metal, blank screen
> on Xen unstable.

I am 99% sure you have forgotten to set CONFIG_DMAR?
> 
> Jeremy's kernel is 2.6.32.39, assertion fails with
> boot_cpu_has(X86_FEATURE_TSC_RELIABLE) when booting on Xen unstable.
> 
> I also skim hvc_xen.c, the Dom0 console operations are straight
> forward -- they are just wrapper of console IO hypercall.

For that, try 'debug loglevel=8 console=hvc' on your Linux line to make sure that the output
is being piped through to the Xen hypervisor.

And on the Xen hypervisor do have 'console_to_ring'
> 
> Is that a hardware-related problem?
No.

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Wei Liu]

On Mon, May 2, 2011 at 10:10 PM, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
> On Mon, May 02, 2011 at 07:31:21PM +0800, Wei Liu wrote:
>> I test with various command line options, along with Konrad's [1] and
>> Jeremy's [2] kernel. It's still blank.
>
> For the Intel graphic cards to work, you need CONFIG_DMAR to be set.
> Do you have that?
>>
>> Konrad's kernel is 2.6.39-rc4, runs well on bare metal, blank screen
>> on Xen unstable.
>
> I am 99% sure you have forgotten to set CONFIG_DMAR?

Actually I have set CONFIG_DMAR.

CONFIG_DMAR=y
CONFIG_DMAR_DEFAULT_ON=y
CONFIG_DMAR_FLOPPY_WA=y

>
> For that, try 'debug loglevel=8 console=hvc' on your Linux line to make sure that the output
> is being piped through to the Xen hypervisor.
>
> And on the Xen hypervisor do have 'console_to_ring'

I've added those debugging options in the first place. Here is my
kernel dmesg output.

------ start of dmesg ------

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.39-rc4-konrad+ (liuw@limbo) (gcc
version 4.4.5 (Debian 4.4.5-8) ) #0 SMP Tue May 3 10:42:21 CST 2011
[    0.000000] Command line: console=hvc0 earlyprintk=xen debug
loglevel=8 root=UUID=fd49322b-830f-44d2-8bdf-de5c355bb159 ro quiet
[    0.000000] e820_region: type=1 start=0000000000000000 end=000000000009d000
[    0.000000] e820_region: type=2 start=000000000009d000 end=00000000000a0000
[    0.000000] e820_region: type=2 start=00000000000ce000 end=00000000000d0000
[    0.000000] e820_region: type=2 start=00000000000e0000 end=0000000000100000
[    0.000000] e820_region: type=1 start=0000000000100000 end=0000000076a80000
[    0.000000] e820_region: type=3 start=0000000076a80000 end=0000000076a98000
[    0.000000] e820_region: type=4 start=0000000076a98000 end=0000000076abc000
[    0.000000] e820_region: type=2 start=0000000076abc000 end=0000000080000000
[    0.000000] e820_region: type=2 start=00000000f8000000 end=00000000fc000000
[    0.000000] e820_region: type=2 start=00000000fec00000 end=00000000fec10000
[    0.000000] e820_region: type=2 start=00000000fee00000 end=00000000fee01000
[    0.000000] e820_region: type=2 start=00000000ff000000 end=0000000100000000
[    0.000000] released 0 pages of unused memory
[    0.000000] extra e820 region: start=0000000100000000 end=00000001090d9000
[    0.000000] 1-1 mapping on 9d->100
[    0.000000] 1-1 mapping on 76a80->100000
[    0.000000] Set 562659 page(s) to 1-1 mapping.
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  Xen: 0000000000000000 - 000000000009d000 (usable)
[    0.000000]  Xen: 000000000009d000 - 0000000000100000 (reserved)
[    0.000000]  Xen: 0000000000100000 - 000000006d9a7000 (usable)
[    0.000000]  Xen: 000000006d9a7000 - 0000000076a80000 (unusable)
[    0.000000]  Xen: 0000000076a80000 - 0000000076a98000 (ACPI data)
[    0.000000]  Xen: 0000000076a98000 - 0000000076abc000 (ACPI NVS)
[    0.000000]  Xen: 0000000076abc000 - 0000000080000000 (reserved)
[    0.000000]  Xen: 00000000f8000000 - 00000000fc000000 (reserved)
[    0.000000]  Xen: 00000000fec00000 - 00000000fec10000 (reserved)
[    0.000000]  Xen: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  Xen: 00000000ff000000 - 0000000100000000 (reserved)
[    0.000000]  Xen: 0000000100000000 - 00000001090d9000 (usable)
[    0.000000] bootconsole [xenboot0] enabled
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] DMI present.
[    0.000000] DMI: LENOVO QiTianM8200/LENOVO, BIOS 5CKT54AUS 09/07/2009
[    0.000000] e820 update range: 0000000000000000 - 0000000000010000
(usable) ==> (reserved)
[    0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable)
[    0.000000] No AGP bridge found
[    0.000000] last_pfn = 0x1090d9 max_arch_pfn = 0x400000000
[    0.000000] last_pfn = 0x6d9a7 max_arch_pfn = 0x400000000
[    0.000000] found SMP MP-table at [ffff8800000f6b20] f6b20
[    0.000000] initial memory mapped : 0 - 10ac8000
[    0.000000] Base memory trampoline at [ffff880000098000] 98000 size 20480
[    0.000000] init_memory_mapping: 0000000000000000-000000006d9a7000
[    0.000000]  0000000000 - 006d9a7000 page 4k
[    0.000000] kernel direct mapping tables up to 6d9a7000 @ 6d637000-6d9a7000
[    0.000000] xen: setting RW the range 6d919000 - 6d9a7000
[    0.000000] init_memory_mapping: 0000000100000000-00000001090d9000
[    0.000000]  0100000000 - 01090d9000 page 4k
[    0.000000] kernel direct mapping tables up to 1090d9000 @ 6cde8000-6d637000
[    0.000000] xen: setting RW the range 6ce32000 - 6d637000
[    0.000000] RAMDISK: 0192d000 - 10ac8000
[    0.000000] ACPI: RSDP 00000000000f68f0 00024 (v02 LENOVO)
[    0.000000] ACPI: XSDT 0000000076a8a41a 000AC (v01 LENOVO TC-5C
00000136  LTP 00000000)
[    0.000000] ACPI: TCPA 0000000076a97c3f 00032 (v02 LENOVO TC-5C
00000136 PTL  00000000)
[    0.000000] ACPI: FACP 0000000076a97c71 000F4 (v03 LENOVO TC-5C
00000136 PTL  00000002)
[    0.000000] ACPI: DSDT 0000000076a8e4e8 096D3 (v01 LENOVO TC-5C
00000136 MSFT 0100000E)
[    0.000000] ACPI: FACS 0000000076abbfc0 00040
[    0.000000] ACPI: XMAR 0000000076a97d65 00120 (v01 LENOVO TC-5C
00000136 LOHR 00000001)
[    0.000000] ACPI: MCFG 0000000076a97e85 0003C (v01 LENOVO TC-5C
00000136  LTP 00000000)
[    0.000000] ACPI: HPET 0000000076a97ec1 00038 (v01 LENOVO TC-5C
00000136  LTP 00000001)
[    0.000000] ACPI: APIC 0000000076a97ef9 00068 (v01 LENOVO TC-5C
00000136  LTP 00000000)
[    0.000000] ACPI: BOOT 0000000076a97f61 00028 (v01 LENOVO TC-5C
00000136  LTP 00000001)
[    0.000000] ACPI: ASF! 0000000076a97f89 00077 (v32 LENOVO TC-5C
00000136 PTL  00000001)
[    0.000000] ACPI: SSDT 0000000076a8bd12 0025F (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: SSDT 0000000076a8bc6c 000A6 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: SSDT 0000000076a8bbc6 000A6 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: SSDT 0000000076a8bb20 000A6 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: SSDT 0000000076a8ba7a 000A6 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: SSDT 0000000076a8b9d4 000A6 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: SSDT 0000000076a8b92e 000A6 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: SSDT 0000000076a8b888 000A6 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: SSDT 0000000076a8a4c6 013C2 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] No NUMA configuration found
[    0.000000] Faking a node at 0000000000000000-00000001090d9000
[    0.000000] NUMA: Using 63 for the hash shift.
[    0.000000] Initmem setup node 0 0000000000000000-00000001090d9000
[    0.000000]   NODE_DATA [000000006d9a2000 - 000000006d9a6fff]
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000010 -> 0x00001000
[    0.000000]   DMA32    0x00001000 -> 0x00100000
[    0.000000]   Normal   0x00100000 -> 0x001090d9
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[3] active PFN ranges
[    0.000000]     0: 0x00000010 -> 0x0000009d
[    0.000000]     0: 0x00000100 -> 0x0006d9a7
[    0.000000]     0: 0x00100000 -> 0x001090d9
[    0.000000] On node 0 totalpages: 485901
[    0.000000]   DMA zone: 56 pages used for memmap
[    0.000000]   DMA zone: 5 pages reserved
[    0.000000]   DMA zone: 3920 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 14280 pages used for memmap
[    0.000000]   DMA32 zone: 430559 pages, LIFO batch:31
[    0.000000]   Normal zone: 507 pages used for memmap
[    0.000000]   Normal zone: 36574 pages, LIFO batch:7
[    0.000000] ACPI: PM-Timer IO Port: 0x1008
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
[    0.000000] BIOS bug: APIC version is 0 for CPU 0/0x0, fixing up to 0x10
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
[    0.000000] ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 2, version 255, address 0xfec00000, GSI 0-255
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] ACPI: HPET id: 0xffffffff base: 0xfed00000
[    0.000000] SMP: Allowing 2 CPUs, 0 hotplug CPUs
[    0.000000] nr_irqs_gsi: 272
[    0.000000] PM: Registered nosave memory: 000000000009d000 - 0000000000100000
[    0.000000] PM: Registered nosave memory: 000000006d9a7000 - 0000000076a80000
[    0.000000] PM: Registered nosave memory: 0000000076a80000 - 0000000076a98000
[    0.000000] PM: Registered nosave memory: 0000000076a98000 - 0000000076abc000
[    0.000000] PM: Registered nosave memory: 0000000076abc000 - 0000000080000000
[    0.000000] PM: Registered nosave memory: 0000000080000000 - 00000000f8000000
[    0.000000] PM: Registered nosave memory: 00000000f8000000 - 00000000fc000000
[    0.000000] PM: Registered nosave memory: 00000000fc000000 - 00000000fec00000
[    0.000000] PM: Registered nosave memory: 00000000fec00000 - 00000000fec10000
[    0.000000] PM: Registered nosave memory: 00000000fec10000 - 00000000fee00000
[    0.000000] PM: Registered nosave memory: 00000000fee00000 - 00000000fee01000
[    0.000000] PM: Registered nosave memory: 00000000fee01000 - 00000000ff000000
[    0.000000] PM: Registered nosave memory: 00000000ff000000 - 0000000100000000
[    0.000000] Allocating PCI resources starting at 80000000 (gap:
80000000:78000000)
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.2-unstable (preserve-AD)
[    0.000000] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512
nr_cpu_ids:2 nr_node_ids:1
[    0.000000] PERCPU: Embedded 28 pages/cpu @ffff88006d5ff000 s83392
r8192 d23104 u114688
[    0.000000] pcpu-alloc: s83392 r8192 d23104 u114688 alloc=28*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1
[    0.000000] Built 1 zonelists in Node order, mobility grouping on.
Total pages: 471053
[    0.000000] Policy zone: Normal
[    0.000000] Kernel command line: console=hvc0 earlyprintk=xen debug
loglevel=8 root=UUID=fd49322b-830f-44d2-8bdf-de5c355bb159 ro quiet
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] xsave/xrstor: enabled xstate_bv 0x3, cntxt size 0x240
[    0.000000] Placing 64MB software IO TLB between ffff880066c00000 -
ffff88006ac00000
[    0.000000] software IO TLB at phys 0x66c00000 - 0x6ac00000
[    0.000000] Memory: 1437004k/4342628k available (3811k kernel code,
2399024k absent, 506600k reserved, 2854k data, 592k init)
[    0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0,
CPUs=2, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000] 	RCU-based detection of stalled CPUs is disabled.
[    0.000000] NR_IRQS:33024 nr_irqs:512 16
[    0.000000] xen: sci override: global_irq=9 trigger=0 polarity=0
[    0.000000] xen: registering gsi 9 triggering 0 polarity 0
[    0.000000] xen: --> pirq=9 -> irq=9
[    0.000000] xen: acpi sci 9
[    0.000000] xen: --> pirq=1 -> irq=1
[    0.000000] xen: --> pirq=2 -> irq=2
[    0.000000] xen: --> pirq=3 -> irq=3
[    0.000000] xen: --> pirq=4 -> irq=4
[    0.000000] xen: --> pirq=5 -> irq=5
[    0.000000] xen: --> pirq=6 -> irq=6
[    0.000000] xen: --> pirq=7 -> irq=7
[    0.000000] xen: --> pirq=8 -> irq=8
[    0.000000] xen_map_pirq_gsi: returning irq 9 for gsi 9
[    0.000000] xen: --> pirq=9 -> irq=9
[    0.000000] xen: --> pirq=10 -> irq=10
[    0.000000] xen: --> pirq=11 -> irq=11
[    0.000000] xen: --> pirq=12 -> irq=12
[    0.000000] xen: --> pirq=13 -> irq=13
[    0.000000] xen: --> pirq=14 -> irq=14
[    0.000000] xen: --> pirq=15 -> irq=15
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [hvc0] enabled, bootconsole disabled
[    0.000000] Xen: using vcpuop timer interface
[    0.000000] installing Xen timer for CPU 0
[    0.000000] Detected 2992.540 MHz processor.
[    0.004000] Calibrating delay loop (skipped), value calculated
using timer frequency.. 5985.08 BogoMIPS (lpj=11970160)
[    0.004000] pid_max: default: 32768 minimum: 301
[    0.004000] Security Framework initialized
[    0.004000] SELinux:  Disabled at boot.
[    0.004000] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[    0.004000] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.004000] Mount-cache hash table entries: 256
[    0.004000] Initializing cgroup subsys ns
[    0.004000] ns_cgroup deprecated: consider using the
'clone_children' flag without the ns_cgroup.
[    0.004000] Initializing cgroup subsys cpuacct
[    0.004000] Initializing cgroup subsys devices
[    0.004000] Initializing cgroup subsys freezer
[    0.004000] Initializing cgroup subsys net_cls
[    0.004000] CPU: Physical Processor ID: 0
[    0.004000] CPU: Processor Core ID: 0
[    0.004000] ACPI: Core revision 20110316
[    0.016072] Performance Events: unsupported p6 CPU model 23 no PMU
driver, software events only.
[    0.016277] installing Xen timer for CPU 1
[    0.016396] Brought up 2 CPUs
[    0.016456] devtmpfs: initialized
[    0.018005] PM: Registering ACPI NVS region at 76a98000 (147456 bytes)
[    0.018005] Grant table initialized
[    0.018005] print_constraints: dummy:
[    0.018005] NET: Registered protocol family 16
[    0.018005] ACPI: bus type pci registered
[    0.018005] PCI: MMCONFIG for domain 0000 [bus 00-10] at [mem
0xf8000000-0xf90fffff] (base 0xf8000000)
[    0.018005] PCI: MMCONFIG at [mem 0xf8000000-0xf90fffff] reserved in E820
[    0.023399] PCI: Using configuration type 1 for base access
[    0.023799] bio: create slab <bio-0> at 0
[    0.026338] ACPI: EC: Look up EC in DSDT
[    0.032203] ACPI: SSDT 0000000076a8c991 001DD (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.032799] ACPI: Dynamic OEM Table Load:
[    0.032803] ACPI: SSDT           (null) 001DD (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.033178] ACPI: SSDT 0000000076a8bf71 0067D (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.033814] ACPI: Dynamic OEM Table Load:
[    0.033818] ACPI: SSDT           (null) 0067D (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.048491] ACPI: SSDT 0000000076a8cb6e 0016E (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.049100] ACPI: Dynamic OEM Table Load:
[    0.049104] ACPI: SSDT           (null) 0016E (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.049338] ACPI: SSDT 0000000076a8c5ee 00085 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.049934] ACPI: Dynamic OEM Table Load:
[    0.049938] ACPI: SSDT           (null) 00085 (v01 LENOVO TC-5C
00000136 INTL 20050228)
[    0.060322] ACPI: Interpreter enabled
[    0.060325] ACPI: (supports S0 S3 S4 S5)
[    0.060341] ACPI: Using IOAPIC for interrupt routing
[    0.080293] ACPI: No dock devices found.
[    0.080297] PCI: Using host bridge windows from ACPI; if necessary,
use "pci=nocrs" and report a bug
[    0.081048] ACPI Error: [CAPB] Namespace lookup failure,
AE_ALREADY_EXISTS (20110316/dsfield-143)
[    0.081056] ACPI Error: Method parse/execution failed
[\_SB_.PCI0._OSC] (Node ffff88006d3330a0), AE_ALREADY_EXISTS
(20110316/psparse-536)
[    0.081064] ACPI: Marking method _OSC as Serialized because of
AE_ALREADY_EXISTS error
[    0.081071] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-3f])
[    0.082443] pci_root PNP0A03:00: host bridge window [io  0x0000-0x0cf7]
[    0.082446] pci_root PNP0A03:00: host bridge window [mem
0x000a0000-0x000bffff]
[    0.082448] pci_root PNP0A03:00: host bridge window [mem
0x000d0000-0x000d3fff]
[    0.082451] pci_root PNP0A03:00: host bridge window [mem
0x000d4000-0x000d7fff]
[    0.082453] pci_root PNP0A03:00: host bridge window [mem
0x000d8000-0x000dbfff]
[    0.082456] pci_root PNP0A03:00: host bridge window [mem
0x000dc000-0x000dffff]
[    0.082459] pci_root PNP0A03:00: host bridge window [mem
0x7f000000-0xfffffffe]
[    0.082462] pci_root PNP0A03:00: host bridge window [io  0x0d00-0xfdff]
[    0.082464] pci_root PNP0A03:00: host bridge window [mem
0xfed40000-0xfed4ffff]
[    0.082467] pci_root PNP0A03:00: host bridge window expanded to
[mem 0x7f000000-0xfffffffe]; [mem 0xfed40000-0xfed4ffff] ignored
[    0.082485] pci 0000:00:00.0: [8086:2e10] type 0 class 0x000600
[    0.082574] pci 0000:00:02.0: [8086:2e12] type 0 class 0x000300
[    0.082602] pci 0000:00:02.0: reg 10: [mem 0xfc000000-0xfc3fffff 64bit]
[    0.082620] pci 0000:00:02.0: reg 18: [mem 0xe0000000-0xefffffff 64bit pref]
[    0.082632] pci 0000:00:02.0: reg 20: [io  0x1c70-0x1c77]
[    0.082700] pci 0000:00:02.1: [8086:2e13] type 0 class 0x000380
[    0.082724] pci 0000:00:02.1: reg 10: [mem 0xfc400000-0xfc4fffff 64bit]
[    0.082835] pci 0000:00:03.0: [8086:2e14] type 0 class 0x000780
[    0.082879] pci 0000:00:03.0: reg 10: [mem 0xfc524000-0xfc52400f 64bit]
[    0.082979] pci 0000:00:03.0: PME# supported from D0 D3hot D3cold
[    0.082985] pci 0000:00:03.0: PME# disabled
[    0.083017] pci 0000:00:03.2: [8086:2e16] type 0 class 0x000101
[    0.083055] pci 0000:00:03.2: reg 10: [io  0x1c88-0x1c8f]
[    0.083073] pci 0000:00:03.2: reg 14: [io  0x1c7c-0x1c7f]
[    0.083091] pci 0000:00:03.2: reg 18: [io  0x1c80-0x1c87]
[    0.083109] pci 0000:00:03.2: reg 1c: [io  0x1c78-0x1c7b]
[    0.083127] pci 0000:00:03.2: reg 20: [io  0x1c40-0x1c4f]
[    0.083248] pci 0000:00:03.3: [8086:2e17] type 0 class 0x000700
[    0.083285] pci 0000:00:03.3: reg 10: [io  0x1c90-0x1c97]
[    0.083304] pci 0000:00:03.3: reg 14: [mem 0xfc526000-0xfc526fff]
[    0.083529] pci 0000:00:19.0: [8086:10de] type 0 class 0x000200
[    0.083571] pci 0000:00:19.0: reg 10: [mem 0xfc500000-0xfc51ffff]
[    0.083589] pci 0000:00:19.0: reg 14: [mem 0xfc527000-0xfc527fff]
[    0.083608] pci 0000:00:19.0: reg 18: [io  0x1820-0x183f]
[    0.083725] pci 0000:00:19.0: PME# supported from D0 D3hot D3cold
[    0.083732] pci 0000:00:19.0: PME# disabled
[    0.083770] pci 0000:00:1a.0: [8086:3a67] type 0 class 0x000c03
[    0.083866] pci 0000:00:1a.0: reg 20: [io  0x1840-0x185f]
[    0.083960] pci 0000:00:1a.1: [8086:3a68] type 0 class 0x000c03
[    0.084004] pci 0000:00:1a.1: reg 20: [io  0x1860-0x187f]
[    0.084047] pci 0000:00:1a.2: [8086:3a69] type 0 class 0x000c03
[    0.084142] pci 0000:00:1a.2: reg 20: [io  0x1880-0x189f]
[    0.084255] pci 0000:00:1a.7: [8086:3a6c] type 0 class 0x000c03
[    0.084297] pci 0000:00:1a.7: reg 10: [mem 0xfc528000-0xfc5283ff]
[    0.084446] pci 0000:00:1a.7: PME# supported from D0 D3hot D3cold
[    0.084452] pci 0000:00:1a.7: PME# disabled
[    0.084500] pci 0000:00:1b.0: [8086:3a6e] type 0 class 0x000403
[    0.084533] pci 0000:00:1b.0: reg 10: [mem 0xfc520000-0xfc523fff 64bit]
[    0.084664] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    0.084671] pci 0000:00:1b.0: PME# disabled
[    0.084716] pci 0000:00:1d.0: [8086:3a64] type 0 class 0x000c03
[    0.084811] pci 0000:00:1d.0: reg 20: [io  0x18a0-0x18bf]
[    0.084905] pci 0000:00:1d.1: [8086:3a65] type 0 class 0x000c03
[    0.085000] pci 0000:00:1d.1: reg 20: [io  0x18c0-0x18df]
[    0.085095] pci 0000:00:1d.2: [8086:3a66] type 0 class 0x000c03
[    0.085189] pci 0000:00:1d.2: reg 20: [io  0x18e0-0x18ff]
[    0.085302] pci 0000:00:1d.7: [8086:3a6a] type 0 class 0x000c03
[    0.085343] pci 0000:00:1d.7: reg 10: [mem 0xfc529000-0xfc5293ff]
[    0.085493] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
[    0.085500] pci 0000:00:1d.7: PME# disabled
[    0.085538] pci 0000:00:1e.0: [8086:244e] type 1 class 0x000604
[    0.085669] pci 0000:00:1f.0: [8086:3a14] type 0 class 0x000601
[    0.085877] pci 0000:00:1f.2: [8086:3a02] type 0 class 0x000106
[    0.085923] pci 0000:00:1f.2: reg 10: [io  0x1ca8-0x1caf]
[    0.085941] pci 0000:00:1f.2: reg 14: [io  0x1c9c-0x1c9f]
[    0.085960] pci 0000:00:1f.2: reg 18: [io  0x1ca0-0x1ca7]
[    0.085978] pci 0000:00:1f.2: reg 1c: [io  0x1c98-0x1c9b]
[    0.085997] pci 0000:00:1f.2: reg 20: [io  0x1c00-0x1c1f]
[    0.086015] pci 0000:00:1f.2: reg 24: [mem 0xfc52a000-0xfc52a7ff]
[    0.086098] pci 0000:00:1f.2: PME# supported from D3hot
[    0.086105] pci 0000:00:1f.2: PME# disabled
[    0.086141] pci 0000:00:1f.3: [8086:3a60] type 0 class 0x000c05
[    0.086175] pci 0000:00:1f.3: reg 10: [mem 0xfc52b000-0xfc52b0ff 64bit]
[    0.086225] pci 0000:00:1f.3: reg 20: [io  0x1c20-0x1c3f]
[    0.086404] pci 0000:00:1e.0: PCI bridge to [bus 11-11] (subtractive decode)
[    0.086412] pci 0000:00:1e.0:   bridge window [io  0xf000-0x0000] (disabled)
[    0.086419] pci 0000:00:1e.0:   bridge window [mem
0xfff00000-0x000fffff] (disabled)
[    0.086432] pci 0000:00:1e.0:   bridge window [mem
0xfff00000-0x000fffff pref] (disabled)
[    0.086435] pci 0000:00:1e.0:   bridge window [io  0x0000-0x0cf7]
(subtractive decode)
[    0.086438] pci 0000:00:1e.0:   bridge window [mem
0x000a0000-0x000bffff] (subtractive decode)
[    0.086441] pci 0000:00:1e.0:   bridge window [mem
0x000d0000-0x000d3fff] (subtractive decode)
[    0.086445] pci 0000:00:1e.0:   bridge window [mem
0x000d4000-0x000d7fff] (subtractive decode)
[    0.086448] pci 0000:00:1e.0:   bridge window [mem
0x000d8000-0x000dbfff] (subtractive decode)
[    0.086451] pci 0000:00:1e.0:   bridge window [mem
0x000dc000-0x000dffff] (subtractive decode)
[    0.086454] pci 0000:00:1e.0:   bridge window [mem
0x7f000000-0xfffffffe] (subtractive decode)
[    0.086458] pci 0000:00:1e.0:   bridge window [io  0x0d00-0xfdff]
(subtractive decode)
[    0.086474] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[    0.086718] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIB._PRT]
[    0.086853] ACPI Error: [CAPB] Namespace lookup failure,
AE_ALREADY_EXISTS (20110316/dsfield-143)
[    0.086860] ACPI Error: Method parse/execution failed
[\_SB_.PCI0._OSC] (Node ffff88006d3330a0), AE_ALREADY_EXISTS
(20110316/psparse-536)
[    0.086871]  pci0000:00: Requesting ACPI _OSC control (0x1d)
[    0.086923] ACPI Error: [CAPB] Namespace lookup failure,
AE_ALREADY_EXISTS (20110316/dsfield-143)
[    0.086930] ACPI Error: Method parse/execution failed
[\_SB_.PCI0._OSC] (Node ffff88006d3330a0), AE_ALREADY_EXISTS
(20110316/psparse-536)
[    0.086940] Unable to assume _OSC PCIe control. Disabling ASPM
[    0.164084] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 10 *11 12 14 15)
[    0.164147] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 *10 11 12 14 15)
[    0.164207] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 *5 6 7 10 11 12 14 15)
[    0.164267] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 *10 11 12 14 15)
[    0.164331] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11
12 14 15) *0, disabled.
[    0.164396] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11
12 14 15) *0, disabled.
[    0.164461] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11
12 14 15) *0, disabled.
[    0.164536] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 10 11
12 14 15) *0, disabled.
[    0.164580] xen/balloon: Initialising balloon driver.
[    0.164583] last_pfn = 0x1090d9 max_arch_pfn = 0x400000000
[    0.165349] xen-balloon: Initialising balloon driver.
[    0.165399] vgaarb: device added:
PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.165408] vgaarb: loaded
[    0.165466] SCSI subsystem initialized
[    0.165495] libata version 3.00 loaded.
[    0.165495] PCI: Using ACPI for IRQ routing
[    0.165495] PCI: pci_cache_line_size set to 64 bytes
[    0.165495] Expanded resource reserved due to conflict with PCI Bus 0000:00
[    0.165495] Expanded resource reserved due to conflict with reserved
[    0.165495] reserve RAM buffer: 000000000009d000 - 000000000009ffff
[    0.165495] reserve RAM buffer: 000000006d9a7000 - 000000006fffffff
[    0.165495] reserve RAM buffer: 00000001090d9000 - 000000010bffffff
[    0.165495] Switching to clocksource xen
[    0.166213] pnp: PnP ACPI init
[    0.166219] ACPI: bus type pnp registered
[    0.166265] Switched to NOHz mode on CPU #0
[    0.166630] pnp 00:00: [bus 00-3f]
[    0.166632] pnp 00:00: [io  0x0cf8-0x0cff]
[    0.166635] pnp 00:00: [io  0x0000-0x0cf7 window]
[    0.166637] pnp 00:00: [mem 0x000a0000-0x000bffff window]
[    0.166640] pnp 00:00: [mem 0x000c0000-0x000c3fff window]
[    0.166642] pnp 00:00: [mem 0x000c4000-0x000c7fff window]
[    0.166644] pnp 00:00: [mem 0x000c8000-0x000cbfff window]
[    0.166646] pnp 00:00: [mem 0x000cc000-0x000cffff window]
[    0.166650] pnp 00:00: [mem 0x000d0000-0x000d3fff window]
[    0.166653] pnp 00:00: [mem 0x000d4000-0x000d7fff window]
[    0.166655] pnp 00:00: [mem 0x000d8000-0x000dbfff window]
[    0.166657] pnp 00:00: [mem 0x000dc000-0x000dffff window]
[    0.166660] pnp 00:00: [mem 0x000e0000-0x000e3fff window]
[    0.166662] pnp 00:00: [mem 0x000e4000-0x000e7fff window]
[    0.166664] pnp 00:00: [mem 0x000e8000-0x000ebfff window]
[    0.166667] pnp 00:00: [mem 0x000ec000-0x000effff window]
[    0.166669] pnp 00:00: [mem 0x000f0000-0x000fffff window]
[    0.166671] pnp 00:00: [mem 0x7f000000-0xfffffffe window]
[    0.166674] pnp 00:00: [io  0x0d00-0xfdff window]
[    0.166676] pnp 00:00: [mem 0x00000000 window]
[    0.166678] pnp 00:00: [mem 0xfed40000-0xfed4ffff window]
[    0.166732] pnp 00:00: Plug and Play ACPI device, IDs PNP0a03 (active)
[    0.166905] pnp 00:01: [io  0x0010-0x001f]
[    0.166907] pnp 00:01: [io  0x0024-0x0025]
[    0.166909] pnp 00:01: [io  0x0028-0x0029]
[    0.166911] pnp 00:01: [io  0x002c-0x002d]
[    0.166913] pnp 00:01: [io  0x0030-0x0031]
[    0.166915] pnp 00:01: [io  0x0034-0x0035]
[    0.166917] pnp 00:01: [io  0x0038-0x0039]
[    0.166919] pnp 00:01: [io  0x003c-0x003d]
[    0.166922] pnp 00:01: [io  0x0072-0x0077]
[    0.166924] pnp 00:01: [io  0x0080]
[    0.166925] pnp 00:01: [io  0x0090-0x009f]
[    0.166928] pnp 00:01: [io  0x00a4-0x00a5]
[    0.166930] pnp 00:01: [io  0x00a8-0x00a9]
[    0.166932] pnp 00:01: [io  0x00ac-0x00ad]
[    0.166934] pnp 00:01: [io  0x00b0-0x00b5]
[    0.166936] pnp 00:01: [io  0x00b8-0x00b9]
[    0.166938] pnp 00:01: [io  0x00bc-0x00bd]
[    0.166940] pnp 00:01: [io  0x0500-0x057f]
[    0.166942] pnp 00:01: [io  0x0800-0x080f]
[    0.166944] pnp 00:01: [io  0x1000-0x107f]
[    0.166946] pnp 00:01: [io  0x1180-0x11bf]
[    0.166948] pnp 00:01: [io  0x004e-0x004f]
[    0.166950] pnp 00:01: [io  0x04d0-0x04d1]
[    0.166952] pnp 00:01: [io  0xfe00]
[    0.166954] pnp 00:01: [mem 0xfed14000-0xfed17fff]
[    0.166956] pnp 00:01: [mem 0xf8000000-0xfbffffff]
[    0.166958] pnp 00:01: [mem 0xfed20000-0xfed3ffff]
[    0.166961] pnp 00:01: [mem 0xfed12000-0xfed12fff]
[    0.166963] pnp 00:01: [mem 0xfed45000-0xfed8ffff]
[    0.166967] pnp 00:01: [mem 0xfef00000-0xfeffffff]
[    0.166970] pnp 00:01: [mem 0xfed18000-0xfed18fff]
[    0.166972] pnp 00:01: [mem 0xfed19000-0xfed19fff]
[    0.166974] pnp 00:01: [mem 0xfed1c000-0xfed1ffff]
[    0.166976] pnp 00:01: [mem 0xfed90000-0xfed93fff]
[    0.166978] pnp 00:01: [mem 0xfee00000-0xfee00fff]
[    0.167054] system 00:01: [io  0x0500-0x057f] has been reserved
[    0.167057] system 00:01: [io  0x0800-0x080f] has been reserved
[    0.167060] system 00:01: [io  0x1000-0x107f] has been reserved
[    0.167062] system 00:01: [io  0x1180-0x11bf] has been reserved
[    0.167065] system 00:01: [io  0x04d0-0x04d1] has been reserved
[    0.167068] system 00:01: [io  0xfe00] has been reserved
[    0.167071] system 00:01: [mem 0xfed14000-0xfed17fff] has been reserved
[    0.167074] system 00:01: [mem 0xf8000000-0xfbffffff] has been reserved
[    0.167077] system 00:01: [mem 0xfed20000-0xfed3ffff] has been reserved
[    0.167080] system 00:01: [mem 0xfed12000-0xfed12fff] has been reserved
[    0.167082] system 00:01: [mem 0xfed45000-0xfed8ffff] has been reserved
[    0.167086] system 00:01: [mem 0xfef00000-0xfeffffff] has been reserved
[    0.167088] system 00:01: [mem 0xfed18000-0xfed18fff] has been reserved
[    0.167091] system 00:01: [mem 0xfed19000-0xfed19fff] has been reserved
[    0.167094] system 00:01: [mem 0xfed1c000-0xfed1ffff] has been reserved
[    0.167097] system 00:01: [mem 0xfed90000-0xfed93fff] has been reserved
[    0.167100] system 00:01: [mem 0xfee00000-0xfee00fff] has been reserved
[    0.167104] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.167114] pnp 00:02: [io  0x0000-0x000f]
[    0.167116] pnp 00:02: [io  0x0081-0x008f]
[    0.167118] pnp 00:02: [io  0x00c0-0x00df]
[    0.167121] pnp 00:02: [dma 4]
[    0.167152] pnp 00:02: Plug and Play ACPI device, IDs PNP0200 (active)
[    0.167162] pnp 00:03: [io  0x00f0-0x00fe]
[    0.167166] xen: registering gsi 13 triggering 1 polarity 0
[    0.167168] xen_map_pirq_gsi: returning irq 13 for gsi 13
[    0.167170] xen: --> pirq=13 -> irq=13
[    0.167180] pnp 00:03: [irq 13]
[    0.167212] pnp 00:03: Plug and Play ACPI device, IDs PNP0c04 (active)
[    0.167284] pnp 00:04: [irq 0 disabled]
[    0.167287] xen: registering gsi 8 triggering 1 polarity 0
[    0.167289] xen_map_pirq_gsi: returning irq 8 for gsi 8
[    0.167291] xen: --> pirq=8 -> irq=8
[    0.167296] pnp 00:04: [irq 8]
[    0.167298] pnp 00:04: [mem 0xfed00000-0xfed003ff]
[    0.167335] pnp 00:04: Plug and Play ACPI device, IDs PNP0103 (active)
[    0.167359] pnp 00:05: [io  0x0070-0x0071]
[    0.167393] pnp 00:05: Plug and Play ACPI device, IDs PNP0b00 (active)
[    0.167402] pnp 00:06: [io  0x0061]
[    0.167435] pnp 00:06: Plug and Play ACPI device, IDs PNP0800 (active)
[    0.167586] pnp 00:07: [mem 0xff800000-0xffffffff]
[    0.167624] pnp 00:07: Plug and Play ACPI device, IDs INT0800 (active)
[    0.167826] pnp 00:08: [io  0x03f8-0x03ff]
[    0.167829] xen: registering gsi 4 triggering 1 polarity 0
[    0.167831] xen_map_pirq_gsi: returning irq 4 for gsi 4
[    0.167833] xen: --> pirq=4 -> irq=4
[    0.167836] Already setup the GSI :4
[    0.167838] pnp 00:08: [irq 4]
[    0.167906] pnp 00:08: Plug and Play ACPI device, IDs PNP0501 (active)
[    0.168380] pnp 00:09: [io  0x03f0-0x03f5]
[    0.168383] pnp 00:09: [io  0x03f7]
[    0.168385] xen: registering gsi 6 triggering 1 polarity 0
[    0.168387] xen_map_pirq_gsi: returning irq 6 for gsi 6
[    0.168389] xen: --> pirq=6 -> irq=6
[    0.168395] pnp 00:09: [irq 6]
[    0.168397] pnp 00:09: [dma 2]
[    0.168455] pnp 00:09: Plug and Play ACPI device, IDs PNP0700 (active)
[    0.168699] Switched to NOHz mode on CPU #1
[    0.168834] pnp 00:0a: [io  0x0060]
[    0.168837] pnp 00:0a: [io  0x0064]
[    0.168889] system 00:0a: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.168915] pnp 00:0b: [mem 0xfed40000-0xfed44fff]
[    0.168960] pnp 00:0b: Plug and Play ACPI device, IDs WEC1000
PNP0c31 (active)
[    0.169020] pnp: PnP ACPI: found 12 devices
[    0.169022] ACPI: ACPI bus type pnp unregistered
[    0.174168] PM-Timer failed consistency check  (0x0xffffff) - aborting.
[    0.174198] pci 0000:00:1e.0: PCI bridge to [bus 11-11]
[    0.174200] pci 0000:00:1e.0:   bridge window [io  disabled]
[    0.174209] pci 0000:00:1e.0:   bridge window [mem disabled]
[    0.174216] pci 0000:00:1e.0:   bridge window [mem pref disabled]
[    0.174238] pci 0000:00:1e.0: setting latency timer to 64
[    0.174243] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7]
[    0.174245] pci_bus 0000:00: resource 5 [mem 0x000a0000-0x000bffff]
[    0.174248] pci_bus 0000:00: resource 6 [mem 0x000d0000-0x000d3fff]
[    0.174250] pci_bus 0000:00: resource 7 [mem 0x000d4000-0x000d7fff]
[    0.174252] pci_bus 0000:00: resource 8 [mem 0x000d8000-0x000dbfff]
[    0.174255] pci_bus 0000:00: resource 9 [mem 0x000dc000-0x000dffff]
[    0.174257] pci_bus 0000:00: resource 10 [mem 0x7f000000-0xfffffffe]
[    0.174260] pci_bus 0000:00: resource 11 [io  0x0d00-0xfdff]
[    0.174262] pci_bus 0000:11: resource 4 [io  0x0000-0x0cf7]
[    0.174265] pci_bus 0000:11: resource 5 [mem 0x000a0000-0x000bffff]
[    0.174267] pci_bus 0000:11: resource 6 [mem 0x000d0000-0x000d3fff]
[    0.174269] pci_bus 0000:11: resource 7 [mem 0x000d4000-0x000d7fff]
[    0.174272] pci_bus 0000:11: resource 8 [mem 0x000d8000-0x000dbfff]
[    0.174274] pci_bus 0000:11: resource 9 [mem 0x000dc000-0x000dffff]
[    0.174276] pci_bus 0000:11: resource 10 [mem 0x7f000000-0xfffffffe]
[    0.174279] pci_bus 0000:11: resource 11 [io  0x0d00-0xfdff]
[    0.174302] NET: Registered protocol family 2
[    0.174472] IP route cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.175732] TCP established hash table entries: 262144 (order: 10,
4194304 bytes)
[    0.177503] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
[    0.177869] TCP: Hash tables configured (established 262144 bind 65536)
[    0.177871] TCP reno registered
[    0.177885] UDP hash table entries: 1024 (order: 3, 32768 bytes)
[    0.177910] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
[    0.177998] NET: Registered protocol family 1
[    0.178020] pci 0000:00:02.0: Boot video device
[    0.178260] PCI: CLS 32 bytes, default 64
[    0.178297] Unpacking initramfs...
[    0.443139] Freeing initrd memory: 247404k freed
[    0.540705] Simple Boot Flag at 0x36 set to 0x1
[    0.541023] audit: initializing netlink socket (disabled)
[    0.541035] type=2000 audit(1304421757.256:1): initialized
[    0.550629] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.551997] VFS: Disk quotas dquot_6.5.2
[    0.552042] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.552396] msgmni has been set to 3289
[    0.552587] Block layer SCSI generic (bsg) driver version 0.4
loaded (major 253)
[    0.552590] io scheduler noop registered
[    0.552592] io scheduler deadline registered
[    0.552625] io scheduler cfq registered (default)
[    0.552815] Event-channel device installed.
[    0.553030] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.820133] xen: registering gsi 17 triggering 0 polarity 1
[    0.820143] xen: --> pirq=17 -> irq=17
[    0.820158] serial 0000:00:03.3: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    0.824050] 0000:00:03.3: ttyS0 at I/O 0x1c90 (irq = 17) is a 16550A
[    0.904266] hpet_acpi_add: no address or irqs in _CRS
[    0.904284] Linux agpgart interface v0.103
[    0.904353] agpgart-intel 0000:00:00.0: Intel Q45/Q43 Chipset
[    0.904522] agpgart-intel 0000:00:00.0: detected gtt size: 524288K
total, 262144K mappable
[    0.905960] agpgart-intel 0000:00:00.0: detected 131072K stolen memory
[    0.906094] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xe0000000
[    0.906178] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    0.909094] serio: i8042 KBD port at 0x60,0x64 irq 1
[    0.909100] serio: i8042 AUX port at 0x60,0x64 irq 12
[    0.909192] mousedev: PS/2 mouse device common for all mice
[    0.909242] rtc_cmos 00:05: RTC can wake from S4
[    0.936205] rtc_cmos 00:05: rtc core: registered rtc_cmos as rtc0
[    0.936251] rtc0: alarms up to one month, y3k, 114 bytes nvram
[    0.936267] cpuidle: using governor ladder
[    0.936269] cpuidle: using governor menu
[    0.936271] No iBFT detected.
[    0.936443] TCP cubic registered
[    0.936534] NET: Registered protocol family 10
[    0.936945] Mobile IPv6
[    0.936948] NET: Registered protocol family 17
[    0.936952] Registering the dns_resolver key type
[    0.937024] PM: Hibernation image not present or could not be loaded.
[    0.937033] registered taskstats version 1
[    0.937438] rtc_cmos 00:05: setting system clock to 2011-05-03
11:22:37 UTC (1304421757)
[    0.937461] Initializing network drop monitor service
[    0.937754] Freeing unused kernel memory: 592k freed
[    0.937876] Write protecting the kernel read-only data: 6144k
[    0.940247] Freeing unused kernel memory: 268k freed
[    0.940519] Freeing unused kernel memory: 616k freed
[    0.979468] udev[48]: starting version 164
[    1.131503] e1000e: Intel(R) PRO/1000 Network Driver - 1.3.10-k2
[    1.131507] e1000e: Copyright(c) 1999 - 2011 Intel Corporation.
[    1.131545] xen: registering gsi 16 triggering 0 polarity 1
[    1.131556] xen: --> pirq=16 -> irq=16
[    1.131567] e1000e 0000:00:19.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.131582] e1000e 0000:00:19.0: setting latency timer to 64
[    1.167772] usbcore: registered new interface driver usbfs
[    1.167909] usbcore: registered new interface driver hub
[    1.167945] usbcore: registered new device driver usb
[    1.171441] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.171986] FDC 0 is a post-1991 82077
[    1.458414] e1000e 0000:00:19.0: eth0: (PCI Express:2.5GB/s:Width
x1) 6c:f0:49:26:c0:97
[    1.458417] e1000e 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
[    1.458467] e1000e 0000:00:19.0: eth0: MAC: 8, PHY: 8, PBA No: FFFFFF-0FF
[    1.458487] ahci 0000:00:1f.2: version 3.0
[    1.458501] xen: registering gsi 17 triggering 0 polarity 1
[    1.458505] xen_map_pirq_gsi: returning irq 17 for gsi 17
[    1.458507] xen: --> pirq=17 -> irq=17
[    1.458512] Already setup the GSI :17
[    1.458515] ahci 0000:00:1f.2: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    1.458687] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 6 ports 3
Gbps 0xd impl SATA mode
[    1.458691] ahci 0000:00:1f.2: flags: 64bit ncq sntf led clo pmp
pio slum part sxs
[    1.458698] ahci 0000:00:1f.2: setting latency timer to 64
[    1.459323] scsi0 : ahci
[    1.459408] scsi1 : ahci
[    1.459457] scsi2 : ahci
[    1.459505] scsi3 : ahci
[    1.459554] scsi4 : ahci
[    1.459603] scsi5 : ahci
[    1.459768] ata1: SATA max UDMA/133 abar m2048@0xfc52a000 port
0xfc52a100 irq 285
[    1.459771] ata2: DUMMY
[    1.459774] ata3: SATA max UDMA/133 abar m2048@0xfc52a000 port
0xfc52a200 irq 285
[    1.459777] ata4: SATA max UDMA/133 abar m2048@0xfc52a000 port
0xfc52a280 irq 285
[    1.459780] ata5: DUMMY
[    1.459781] ata6: DUMMY
[    1.459885] xen: registering gsi 18 triggering 0 polarity 1
[    1.459891] xen: --> pirq=18 -> irq=18
[    1.459897] ehci_hcd 0000:00:1a.7: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    1.459919] ehci_hcd 0000:00:1a.7: setting latency timer to 64
[    1.459924] ehci_hcd 0000:00:1a.7: EHCI Host Controller
[    1.459940] ehci_hcd 0000:00:1a.7: new USB bus registered, assigned
bus number 1
[    1.472137] ehci_hcd 0000:00:1a.7: debug port 1
[    1.476041] ehci_hcd 0000:00:1a.7: cache line size of 32 is not supported
[    1.476051] ehci_hcd 0000:00:1a.7: irq 18, io mem 0xfc528000
[    1.488073] ehci_hcd 0000:00:1a.7: USB 2.0 started, EHCI 1.00
[    1.488096] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    1.488100] usb usb1: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    1.488104] usb usb1: Product: EHCI Host Controller
[    1.488107] usb usb1: Manufacturer: Linux 2.6.39-rc4-konrad+ ehci_hcd
[    1.488110] usb usb1: SerialNumber: 0000:00:1a.7
[    1.488308] hub 1-0:1.0: USB hub found
[    1.488313] hub 1-0:1.0: 6 ports detected
[    1.488375] xen: registering gsi 16 triggering 0 polarity 1
[    1.488378] xen_map_pirq_gsi: returning irq 16 for gsi 16
[    1.488380] xen: --> pirq=16 -> irq=16
[    1.488383] Already setup the GSI :16
[    1.488385] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.488401] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[    1.488405] ehci_hcd 0000:00:1d.7: EHCI Host Controller
[    1.488412] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned
bus number 2
[    1.504124] ehci_hcd 0000:00:1d.7: debug port 1
[    1.508021] ehci_hcd 0000:00:1d.7: cache line size of 32 is not supported
[    1.508039] ehci_hcd 0000:00:1d.7: irq 16, io mem 0xfc529000
[    1.520073] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[    1.520091] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[    1.520095] usb usb2: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    1.520099] usb usb2: Product: EHCI Host Controller
[    1.520102] usb usb2: Manufacturer: Linux 2.6.39-rc4-konrad+ ehci_hcd
[    1.520105] usb usb2: SerialNumber: 0000:00:1d.7
[    1.520273] hub 2-0:1.0: USB hub found
[    1.520277] hub 2-0:1.0: 6 ports detected
[    1.580657] uhci_hcd: USB Universal Host Controller Interface driver
[    1.580686] xen: registering gsi 16 triggering 0 polarity 1
[    1.580689] xen_map_pirq_gsi: returning irq 16 for gsi 16
[    1.580691] xen: --> pirq=16 -> irq=16
[    1.580694] Already setup the GSI :16
[    1.580697] uhci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.580706] uhci_hcd 0000:00:1a.0: setting latency timer to 64
[    1.580710] uhci_hcd 0000:00:1a.0: UHCI Host Controller
[    1.580717] uhci_hcd 0000:00:1a.0: new USB bus registered, assigned
bus number 3
[    1.592110] uhci_hcd 0000:00:1a.0: irq 16, io base 0x00001840
[    1.592186] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[    1.592190] usb usb3: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    1.592194] usb usb3: Product: UHCI Host Controller
[    1.592197] usb usb3: Manufacturer: Linux 2.6.39-rc4-konrad+ uhci_hcd
[    1.592200] usb usb3: SerialNumber: 0000:00:1a.0
[    1.592291] hub 3-0:1.0: USB hub found
[    1.592295] hub 3-0:1.0: 2 ports detected
[    1.592349] xen: registering gsi 17 triggering 0 polarity 1
[    1.592352] xen_map_pirq_gsi: returning irq 17 for gsi 17
[    1.592354] xen: --> pirq=17 -> irq=17
[    1.592357] Already setup the GSI :17
[    1.592359] uhci_hcd 0000:00:1a.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    1.592368] uhci_hcd 0000:00:1a.1: setting latency timer to 64
[    1.592372] uhci_hcd 0000:00:1a.1: UHCI Host Controller
[    1.592379] uhci_hcd 0000:00:1a.1: new USB bus registered, assigned
bus number 4
[    1.608121] uhci_hcd 0000:00:1a.1: irq 17, io base 0x00001860
[    1.608191] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001
[    1.608195] usb usb4: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    1.608199] usb usb4: Product: UHCI Host Controller
[    1.608202] usb usb4: Manufacturer: Linux 2.6.39-rc4-konrad+ uhci_hcd
[    1.608205] usb usb4: SerialNumber: 0000:00:1a.1
[    1.608295] hub 4-0:1.0: USB hub found
[    1.608298] hub 4-0:1.0: 2 ports detected
[    1.608351] xen: registering gsi 18 triggering 0 polarity 1
[    1.608354] xen_map_pirq_gsi: returning irq 18 for gsi 18
[    1.608356] xen: --> pirq=18 -> irq=18
[    1.608359] Already setup the GSI :18
[    1.608362] uhci_hcd 0000:00:1a.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    1.608370] uhci_hcd 0000:00:1a.2: setting latency timer to 64
[    1.608375] uhci_hcd 0000:00:1a.2: UHCI Host Controller
[    1.608381] uhci_hcd 0000:00:1a.2: new USB bus registered, assigned
bus number 5
[    1.620103] uhci_hcd 0000:00:1a.2: irq 18, io base 0x00001880
[    1.620171] usb usb5: New USB device found, idVendor=1d6b, idProduct=0001
[    1.620175] usb usb5: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    1.620178] usb usb5: Product: UHCI Host Controller
[    1.620181] usb usb5: Manufacturer: Linux 2.6.39-rc4-konrad+ uhci_hcd
[    1.620185] usb usb5: SerialNumber: 0000:00:1a.2
[    1.620276] hub 5-0:1.0: USB hub found
[    1.620279] hub 5-0:1.0: 2 ports detected
[    1.620334] xen: registering gsi 16 triggering 0 polarity 1
[    1.620336] xen_map_pirq_gsi: returning irq 16 for gsi 16
[    1.620338] xen: --> pirq=16 -> irq=16
[    1.620341] Already setup the GSI :16
[    1.620344] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.620352] uhci_hcd 0000:00:1d.0: setting latency timer to 64
[    1.620357] uhci_hcd 0000:00:1d.0: UHCI Host Controller
[    1.620363] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned
bus number 6
[    1.632100] uhci_hcd 0000:00:1d.0: irq 16, io base 0x000018a0
[    1.632168] usb usb6: New USB device found, idVendor=1d6b, idProduct=0001
[    1.632172] usb usb6: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    1.632176] usb usb6: Product: UHCI Host Controller
[    1.632179] usb usb6: Manufacturer: Linux 2.6.39-rc4-konrad+ uhci_hcd
[    1.632182] usb usb6: SerialNumber: 0000:00:1d.0
[    1.632343] hub 6-0:1.0: USB hub found
[    1.632348] hub 6-0:1.0: 2 ports detected
[    1.632401] xen: registering gsi 17 triggering 0 polarity 1
[    1.632403] xen_map_pirq_gsi: returning irq 17 for gsi 17
[    1.632405] xen: --> pirq=17 -> irq=17
[    1.632408] Already setup the GSI :17
[    1.632411] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    1.632419] uhci_hcd 0000:00:1d.1: setting latency timer to 64
[    1.632424] uhci_hcd 0000:00:1d.1: UHCI Host Controller
[    1.632430] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned
bus number 7
[    1.648099] uhci_hcd 0000:00:1d.1: irq 17, io base 0x000018c0
[    1.648174] usb usb7: New USB device found, idVendor=1d6b, idProduct=0001
[    1.648178] usb usb7: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    1.648181] usb usb7: Product: UHCI Host Controller
[    1.648184] usb usb7: Manufacturer: Linux 2.6.39-rc4-konrad+ uhci_hcd
[    1.648187] usb usb7: SerialNumber: 0000:00:1d.1
[    1.648354] hub 7-0:1.0: USB hub found
[    1.648359] hub 7-0:1.0: 2 ports detected
[    1.648412] xen: registering gsi 18 triggering 0 polarity 1
[    1.648415] xen_map_pirq_gsi: returning irq 18 for gsi 18
[    1.648417] xen: --> pirq=18 -> irq=18
[    1.648420] Already setup the GSI :18
[    1.648423] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    1.648431] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[    1.648436] uhci_hcd 0000:00:1d.2: UHCI Host Controller
[    1.648445] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned
bus number 8
[    1.676098] uhci_hcd 0000:00:1d.2: irq 18, io base 0x000018e0
[    1.676166] usb usb8: New USB device found, idVendor=1d6b, idProduct=0001
[    1.676170] usb usb8: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    1.676174] usb usb8: Product: UHCI Host Controller
[    1.676177] usb usb8: Manufacturer: Linux 2.6.39-rc4-konrad+ uhci_hcd
[    1.676180] usb usb8: SerialNumber: 0000:00:1d.2
[    1.676344] hub 8-0:1.0: USB hub found
[    1.676349] hub 8-0:1.0: 2 ports detected
[    1.784076] ata4: SATA link down (SStatus 0 SControl 300)
[    1.912066] usb 3-1: new low speed USB device number 2 using uhci_hcd
[    1.944077] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    1.944101] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[    1.944376] ata3.00: ATAPI: HL-DT-ST DVDROM DH30N, 1.04, max UDMA/100
[    1.944817] ata1.00: ATA-8: WDC WD3200AAJS-08L7A0, 03.03E03, max UDMA/100
[    1.944820] ata1.00: 625142448 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
[    1.945034] ata3.00: configured for UDMA/100
[    1.945697] ata1.00: configured for UDMA/100
[    1.945787] scsi 0:0:0:0: Direct-Access     ATA      WDC
WD3200AAJS-0 03.0 PQ: 0 ANSI: 5
[    1.947471] scsi 2:0:0:0: CD-ROM            HL-DT-ST DVDROM DH30N
  1.04 PQ: 0 ANSI: 5
[    1.960076] sd 0:0:0:0: [sda] 625142448 512-byte logical blocks:
(320 GB/298 GiB)
[    1.960147] sd 0:0:0:0: [sda] Write Protect is off
[    1.960150] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.960179] sd 0:0:0:0: [sda] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[    1.990788]  sda: sda1 sda2 < sda5 > sda3 sda4
[    1.991226] sd 0:0:0:0: [sda] Attached SCSI disk
[    1.995699] sr0: scsi3-mmc drive: 62x/62x cd/rw xa/form2 cdda tray
[    1.995704] cdrom: Uniform CD-ROM driver Revision: 3.20
[    1.996059] sr 2:0:0:0: Attached scsi CD-ROM sr0
[    2.000744] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    2.000769] sr 2:0:0:0: Attached scsi generic sg1 type 5
[    2.086187] usb 3-1: New USB device found, idVendor=1006, idProduct=0022
[    2.086192] usb 3-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[    2.086196] usb 3-1: Product: USB Keyboard
[    2.132280] input: USB Keyboard  as
/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0/input/input0
[    2.132582] generic-usb 0003:1006:0022.0001: input,hidraw0: USB HID
v1.11 Keyboard [USB Keyboard ] on usb-0000:00:1a.0-1/input0
[    2.166423] input: USB Keyboard  as
/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.1/input/input1
[    2.166491] generic-usb 0003:1006:0022.0002: input,hidraw1: USB HID
v1.11 Keyboard [USB Keyboard ] on usb-0000:00:1a.0-1/input1
[    2.166643] usbcore: registered new interface driver usbhid
[    2.166646] usbhid: USB HID core driver
[    2.328066] usb 6-1: new low speed USB device number 2 using uhci_hcd
[    2.496182] usb 6-1: New USB device found, idVendor=04b3, idProduct=310c
[    2.496187] usb 6-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[    2.496191] usb 6-1: Product: USB Optical Mouse
[    2.512366] input: USB Optical Mouse as
/devices/pci0000:00/0000:00:1d.0/usb6/6-1/6-1:1.0/input/input2
[    2.512410] generic-usb 0003:04B3:310C.0003: input,hidraw2: USB HID
v1.11 Mouse [USB Optical Mouse] on usb-0000:00:1d.0-1/input0
[    2.609942] EXT4-fs (sda1): mounted filesystem with ordered data
mode. Opts: (null)
[    4.064618] udev[336]: starting version 164
[    4.325175] input: Power Button as
/devices/LNXSYSTM:00/device:00/PNP0A03:00/PNP0C0C:00/input/input3
[    4.325185] ACPI: Power Button [PWRB]
[    4.325221] input: Power Button as
/devices/LNXSYSTM:00/LNXPWRBN:00/input/input4
[    4.325224] ACPI: Power Button [PWRF]
[    4.785529] ACPI: acpi_idle registered with cpuidle
[    4.851150] i801_smbus 0000:00:1f.3: enabling device (0001 -> 0003)
[    4.851158] xen: registering gsi 17 triggering 0 polarity 1
[    4.851162] xen_map_pirq_gsi: returning irq 17 for gsi 17
[    4.851164] xen: --> pirq=17 -> irq=17
[    4.851168] Already setup the GSI :17
[    4.851171] i801_smbus 0000:00:1f.3: PCI INT B -> GSI 17 (level,
low) -> IRQ 17
[    4.976077] tpm_tis 00:0b: 1.2 TPM (device-id 0xFE, rev-id 70)
[    5.413020] xen: registering gsi 16 triggering 0 polarity 1
[    5.413024] xen_map_pirq_gsi: returning irq 16 for gsi 16
[    5.413026] xen: --> pirq=16 -> irq=16
[    5.413030] Already setup the GSI :16
[    5.413034] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level,
low) -> IRQ 16
[    5.413188] HDA Intel 0000:00:1b.0: setting latency timer to 64
[    5.969927] input: HDA Digital PCBeep as
/devices/pci0000:00/0000:00:1b.0/input/input5
[    8.029642] EXT4-fs (sda1): re-mounted. Opts: (null)
[    8.170046] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro
[    8.284722] loop: module loaded
[    8.547409] EXT3-fs: barriers not enabled
[    8.551343] kjournald starting.  Commit interval 5 seconds
[    8.551388] EXT3-fs (sda4): warning: maximal mount count reached,
running e2fsck is recommended
[    8.551613] EXT3-fs (sda4): using internal journal
[    8.551618] EXT3-fs (sda4): mounted filesystem with ordered data mode
[    8.963716] IPv4 FIB: Using LC-trie version 0.409
[    9.733379] fuse init (API version 7.16)
[   12.388498] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   12.752698] sshd (1250): /proc/1250/oom_adj is deprecated, please
use /proc/1250/oom_score_adj instead.
[   14.108934] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow
Control: None
[   14.108939] e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
[   14.109173] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   24.384043] eth0: no IPv6 routers present

------ end of dmesg ------

-- 
Best regards
Wei Liu
Twitter: @iliuw
Site: http://liuw.name

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Konrad Rzeszutek Wilk]

On Tue, May 03, 2011 at 11:28:14AM +0800, Wei Liu wrote:
> On Mon, May 2, 2011 at 10:10 PM, Konrad Rzeszutek Wilk
> <konrad.wilk@oracle.com> wrote:
> > On Mon, May 02, 2011 at 07:31:21PM +0800, Wei Liu wrote:
> >> I test with various command line options, along with Konrad's [1] and
> >> Jeremy's [2] kernel. It's still blank.
> >
> > For the Intel graphic cards to work, you need CONFIG_DMAR to be set.
> > Do you have that?
> >>
> >> Konrad's kernel is 2.6.39-rc4, runs well on bare metal, blank screen
> >> on Xen unstable.
> >
> > I am 99% sure you have forgotten to set CONFIG_DMAR?
> 
> Actually I have set CONFIG_DMAR.
> 
> CONFIG_DMAR=y
> CONFIG_DMAR_DEFAULT_ON=y
> CONFIG_DMAR_FLOPPY_WA=y
> 
> >
> > For that, try 'debug loglevel=8 console=hvc' on your Linux line to make sure that the output
> > is being piped through to the Xen hypervisor.
> >
> > And on the Xen hypervisor do have 'console_to_ring'
> 
> I've added those debugging options in the first place. Here is my
> kernel dmesg output.

Hmm, not seeing the drm messages. Did you compile with the CONFIG_DRM_I915_KMS=y

Also you might want to run with 'drm.debug=255' just to see where it stops working correctly.

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Wei Liu]

On Tue, May 3, 2011 at 11:05 PM, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
>
> Hmm, not seeing the drm messages. Did you compile with the CONFIG_DRM_I915_KMS=y
>
> Also you might want to run with 'drm.debug=255' just to see where it stops working correctly.
>

CONFIG_DRM_I915_KMS=m, that's my original setting.

After I set CONFIG_DRM_I915_KMS=y and added drm.debug=255 to the
command line. The kernel hangs with
"[drm:i915_get_vblank_timestamp], crtc 0 is disabled", repeating forever.

If I don't add drm.debug=255, it boots smoothly. And the VGA console
shows up. Hooray! :-)

-- 
Best regards
Wei Liu
Twitter: @iliuw
Site: http://liuw.name

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Ian Campbell]

On Sat, 2011-04-30 at 10:13 +0100, Wei Liu wrote:
> Hi,
> 
> I'm building my development with Debian Squeeze, Xen unstable and the
> latest 2.6.38.4 kernel.
> 
> According to Xen wiki page, graphic subsystem is not working with
> 2.6.38 [1], so I disable GDM. I also set up various Xen and Linux
> debug options, now that my grub entry looks like:
> 
> --- start of grub config ---
> multiboot  /boot/xen-4.gz com1=115200,8n1 console=com1,vga
> sync_console console_to_ring loglvl=all guest_loglvl=all noreboot
> lapic=debug apic_verbosity=debug apic=debug iommu=off
> 
> module  /boot/vmlinuz-2.6.38.4-liuw+ console=hvc0,vga earlyprintk=xen
> nomodeset initcall_debug debug loglevel=10
> root=UUID=fd49322b-830f-44d2-8bdf-de5c355bb159 ro  quiet

Seems like you've mostly got this sorted but FWIW "console=hvc0,vga" is
not, AFAIK, a valid Linux kernel console= specification.

Firstly you don't give multiple consoles separated with "," you need to
give multiple "console=FOO" (with only the last one
becoming /dev/console, I think). In Linux console= syntax a ","
separates a console name from its options.

Secondly the VGA console is called "tty<n>" in Linux console= speak and
not "vga" (this differs from Xen and Linux's earlyprintk=).

Documentation/kernel-parameters.txt in the kernel source has a bit more
info on the syntax, so do things like Documentation/serial-console.txt.

Ian.

Re: Console is not working with 2.6.38.4 Dom0 and Xen unstable

[Wei Liu]

On Tue, May 3, 2011 at 9:21 PM, Ian Campbell <Ian.Campbell@citrix.com> wrote:
>
> Seems like you've mostly got this sorted but FWIW "console=hvc0,vga" is
> not, AFAIK, a valid Linux kernel console= specification.
>
> Firstly you don't give multiple consoles separated with "," you need to
> give multiple "console=FOO" (with only the last one
> becoming /dev/console, I think). In Linux console= syntax a ","
> separates a console name from its options.
>

I noticed this and changed it to correct form in my later configuration.

> Secondly the VGA console is called "tty<n>" in Linux console= speak and
> not "vga" (this differs from Xen and Linux's earlyprintk=).
>

Yes, I've added console=tty0 in my kernel command line.

Now my grub.conf looks like:

multiboot  /boot/xen-4.gz com1=38400,8n1 console=vga,com1 sync_console
console_to_ring loglvl=all guest_loglvl=all
module  /boot/vmlinuz-2.6.39-rc4+ console=tty0 console=hvc0
earlyprintk=xen debug loglevel=10
root=UUID=fd49322b-830f-44d2-8bdf-de5c355bb159 ro  quiet

A few more tests show strange result.

I use Debian package 2.6.32-5-xen-amd64 with Xen-unstable, it panics
with boot_cpu_has(X86_FEATURE_TSC_RELIABLE), but the VGA console is
working, I can see information printing out.

Then I copy the config-2.6.32-5-xen-amd64 to my 2.6.39 kernel
directory and `make oldconfig`, which I expect it will produces a
kernel that will work. However, it did not turn out as expected. It's
still blank.

I diff'ed these two configs, the differences seem irrelavent.

Any suggestions?

-- 
Best regards
Wei Liu
Twitter: @iliuw
Site: http://liuw.name