[Xen-ia64-devel] RE: No output on serial console with Xen/IA64

["Kayvan Sylvan" <kayvan@xxxxxxxxx>]

This same machine works exactly as expected with the non-Xen kernel.

With the Xen kernel, I get the following possibly interesting messages
on boot:

Jan 14 15:37:46 nec4p1 syslogd 1.4.1: restart.
Jan 14 15:37:46 nec4p1 kernel: klogd 1.4.1, log source = /proc/kmsg
started.
Jan 14 15:37:46 nec4p1 kernel: Linux version 2.6.18.8-xen (root@nec4p1)
(gcc version 3.4.6 20060404 (Red Hat 3.4.6-9)) #4 SMP Mon Jan 14
15:14:48 PST 2008
Jan 14 15:37:46 nec4p1 kernel: EFI v1.00 by Xen/ia64: SALsystab=0x2178
MPS=0x7ea48480 ACPI 2.0=0x7da2c240 ACPI=0x7da8f9c8 SMBIOS=0xf4ee0
HCDP=0x7daf3370
Jan 14 15:37:46 nec4p1 kernel: booting generic kernel on platform dig
Jan 14 15:37:46 nec4p1 kernel: PCDP: v1 at 0x7daf3370
Jan 14 15:37:46 nec4p1 kernel: Explicit "console="; ignoring PCDP
Jan 14 15:37:46 nec4p1 syslog: klogd startup succeeded
Jan 14 15:37:46 nec4p1 portmap: portmap startup succeeded
Jan 14 15:37:46 nec4p1 kernel: Initial ramdisk at: 0xe000000005448000
(2340738 bytes)
Jan 14 15:37:46 nec4p1 kernel: SAL 0.1: Xen/ia64 Xen/ia64 version 0.0
[...]
Jan 14 15:37:46 nec4p1 kernel: 4 CPUs available, 16 CPUs total
Jan 14 15:37:46 nec4p1 kernel: Running on Xen! start_info_pfn=0x1511
nr_pages=131072 flags=0x3
Jan 14 15:37:46 nec4p1 kernel: MCA related initialization done
Jan 14 15:37:46 nec4p1 kernel: Virtual mem_map starts at
0xa0007fffff8b8000
Jan 14 15:37:46 nec4p1 rpc.statd[4310]: Version 1.0.6 Starting
Jan 14 15:37:46 nec4p1 kernel: SMP: Allowing 16 CPUs, 12 hotplug CPUs
Jan 14 15:37:46 nec4p1 kernel: Built 1 zonelists.  Total pages: 125534
Jan 14 15:37:46 nec4p1 kernel: Kernel command line: xencons=ttyS0
console=ttyS0 root=/dev/VolGroup00/LogVol00 ro
Jan 14 15:37:46 nec4p1 kernel: PID hash table entries: 4096 (order: 12,
32768 bytes)
Jan 14 15:37:46 nec4p1 nfslock: rpc.statd startup succeeded
Jan 14 15:37:46 nec4p1 kernel: Console: colour VGA+ 80x25
Jan 14 15:37:46 nec4p1 kernel: Placing software IO TLB between 0x5684000
- 0x9684000
Jan 14 15:37:47 nec4p1 kernel: Memory: 1933104k/2008544k available
(11241k code, 98512k reserved, 5174k data, 704k init)
[...]
Jan 14 15:37:47 nec4p1 ypbind: Setting NIS domain name englinux.psi.com:
succeeded
Jan 14 15:37:47 nec4p1 kernel: Total of 4 processors activated (12766.41
BogoMIPS).
[...]
Jan 14 15:37:09 nec4p1 fsck: /dev/VolGroup00/LogVol00: clean,
378054/8388608 files, 2395359/16777216 blocks
[...]
Jan 14 15:38:00 nec4p1 kernel: Xen virtual console successfully
installed as ttyS0
[...]
Jan 14 15:38:06 nec4p1 kernel: serio: i8042 AUX port at 0x60,0x64 irq 36
Jan 14 15:38:06 nec4p1 kernel: serio: i8042 KBD port at 0x60,0x64 irq 32
Jan 14 15:38:06 nec4p1 kernel: mice: PS/2 mouse device common for all
mice
Jan 14 15:38:06 nec4p1 kernel: i2c /dev entries driver
[...]

Repeatedly hitting return on what should be the serial console gives me
the following on the management console interface:

[iSP0m:WARN.2073] partition 1 :Discarded data from a terminal because
CNX serial is not ready. (RBINT=negated)
[iSP0m:WARN.2073] partition 1 :Discarded data from a terminal because
CNX serial is not ready. (RBINT=negated)

What can I do to fix this?

Thanks.

---Kayvan

-----Original Message-----
From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Kayvan
Sylvan
Sent: Monday, January 14, 2008 3:00 PM
To: Alex Williamson
Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-ia64-devel] Was there a change in xen-3.2-rc5?
bootmessagesnot showing up to console

Hmmm... No, that does not appear to work either.

I am just not getting any output on the console from xen or dom0 on the
one machine.

What could be causing this?

I'm going to carefully re-examine the boot messages and the linux build
(.config) file...

Anyone have any ideas?

---Kayvan

-----Original Message-----
From: Alex Williamson [mailto:alex.williamson@xxxxxx] 
Sent: Friday, January 11, 2008 6:31 PM
To: Kayvan Sylvan
Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-ia64-devel] Was there a change in xen-3.2-rc5?
bootmessages not showing up to console


On Fri, 2008-01-11 at 16:06 -0800, Kayvan Sylvan wrote:
> Did something change between xen-3.2-unstable rc4 and rc5 with the
> console output handling?
> 
   I still get xen & dom0 console output on all my systems with
xen-unstable.hg cset 16707.  Can you copy the xen and vmlinuz binaries
from one to the other and see if they still work/fail the same way?

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.


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