Mailing List Archive

On Sat, Apr 23, 2005 at 12:36:10PM +0200, Christian Wicke wrote:
> With this howto you should avoid any traps like wrong kernels or wrong
> network. But nothing is perfect. If you have any suggestions to improve it,
> please let me know.

As I am interested in looking at Xen for the first time and I have a
debian sarge machine, I followed the first part of your howto.
Unfortunately on reboot I get the following:

Starting hotplug subsystem:
pci
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected an Intel i875 Chipset.
agpgart: Maximum main memory to use for agp memory: 1797M
general protection fault: 0000 [#1]
PREEMPT
Modules linked in: intel_agp agpgart w83627hf eeprom lm85 i2c_sensor i2c_isa i2c_i801 i2c_dev i2c_core genrtc
CPU: 0
EIP: 0061:[<f8f538f0>] Not tainted VLI
EFLAGS: 00011202 (2.6.10curacaoxen0)
EIP is at global_cache_flush+0x0/0x10 [agpgart]
eax: f8f601a0 ebx: 00000000 ecx: 006d3fe0 edx: c16d4000
esi: f69c0000 edi: 369c0000 ebp: 00000006 esp: f71f9e7c
ds: 007b es: 007b ss: 0069
Process modprobe (pid: 1576, threadinfo=f71f8000 task=f7070580)
Stack: f8f533eb f8f59700 00000000 00010000 f69fffff 00000000 f8f59700 00000000
00000100 f8f5112a c037a128 c037a148 c01d5800 00000000 00000000 f8f59700
00000001 c06f3400 00000000 f8f51367 f8f59700 0034ae48 f8f60620 f8f60620
Call Trace:
[<f8f533eb>] agp_generic_create_gatt_table+0xfb/0x240 [agpgart]
[<f8f5112a>] agp_backend_initialize+0x6a/0x190 [agpgart]
[<c01d5800>] pci_enable_device+0x40/0x50
[<f8f51367>] agp_add_bridge+0x87/0x180 [agpgart]
[<c01d7882>] pci_device_probe_static+0x52/0x70
[<c01d78dc>] __pci_device_probe+0x3c/0x50
[<c01d791c>] pci_device_probe+0x2c/0x50
[<c01ffe0f>] driver_probe_device+0x2f/0x80
[<c01fff5c>] driver_attach+0x5c/0xa0
[<c02004ad>] bus_add_driver+0x9d/0xd0
[<c0200acf>] driver_register+0x2f/0x40
[<c01d7ba4>] pci_register_driver+0x64/0x90
[<f8a8f00f>] agp_intel_init+0xf/0x11 [intel_agp]
[<c0134ce2>] sys_init_module+0x182/0x230
[<c0109658>] syscall_call+0x7/0xb
Code: 74 24 10 83 c4 14 c3 8d 74 26 00 83 ec 04 a1 e4 92 f5 f8 8b 50 38 85 d2 75 02 58 c3 8b 50 04 8b 44 24 08 89 04 24 ff 52 24 eb ef <0f> 09 c3 8d b6 00 00 00 00 8d bc 27 00 00 00 00 a1 e4 92 f5 f8
./pci.agent: line 156: 1576 Segmentation fault $MODPROBE $MODULE >/dev/null 2>&1
intel-agp: can't be loaded
missing kernel or user mode driver intel-agp
<6>USB Universal Host Controller Interface driver v2.2

and then nothing at all, boot does not continue.

Using versions of kernel and all xen packages from your howto. Once
I get someone to go and reboot the machine I can get you the kernel
.config for dom0.

Any ideas what is wrong? Should I just disable everything to do
with AGP in the meantime?

Also, I noticed this further up:

WARNING: Failed to register Xen virtual console driver as 'ttyS0'

I have a terminal server attached so normally my kernel lines in
grub would look like this:

kernel /vmlinuz-2.6.10 ro root=LABEL=/ console=tty0 console=ttyS0

so I added a console=ttyS0 on the end of the kernel line from your
howto. Was that wrong?

--
> > > The optimum programming team size is 1.
Has Jurassic Park taught us nothing?
-- pfilandr

> As I am interested in looking at Xen for the first time and I have a
> debian sarge machine, I followed the first part of your howto.
> Unfortunately on reboot I get the following:
> ...
> and then nothing at all, boot does not continue.
>
> Using versions of kernel and all xen packages from your howto. Once
> I get someone to go and reboot the machine I can get you the kernel
> .config for dom0.
>
> Any ideas what is wrong? Should I just disable everything to do
> with AGP in the meantime?
I think AGP is still not working perfectly. Other people were having problems
with it, too. See
http://lists.xensource.com/archives/html/xen-devel/2005-03/msg00375.html and
http://lists.xensource.com/archives/html/xen-devel/2005-03/msg00593.html.

I will add this to my howto.

> Also, I noticed this further up:
>
> WARNING: Failed to register Xen virtual console driver as 'ttyS0'
>
> I have a terminal server attached so normally my kernel lines in
> grub would look like this:
>
> kernel /vmlinuz-2.6.10 ro root=LABEL=/ console=tty0 console=ttyS0
>
> so I added a console=ttyS0 on the end of the kernel line from your
> howto. Was that wrong?
I have no clue. I guess, if the kernel has support for ttyS0 it should work.
Maybe someone from the developers can help you here.

Christian

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> > Any ideas what is wrong? Should I just disable everything
> to do with
> > AGP in the meantime?
> I think AGP is still not working perfectly. Other people were
> having problems with it, too. See
> http://lists.xensource.com/archives/html/xen-devel/2005-03/msg
> 00375.html and
> http://lists.xensource.com/archives/html/xen-devel/2005-03/msg
> 00593.html.

AGP is believed to be working OK in 2.0-testing and unstable, but there
hasn't been a stable release with the fixes yet.

> > WARNING: Failed to register Xen virtual console driver as 'ttyS0'
> >
> > I have a terminal server attached so normally my kernel
> lines in grub
> > would look like this:
> >
> > kernel /vmlinuz-2.6.10 ro root=LABEL=/ console=tty0 console=ttyS0
> >
> > so I added a console=ttyS0 on the end of the kernel line from your
> > howto. Was that wrong?
> I have no clue. I guess, if the kernel has support for ttyS0
> it should work.
> Maybe someone from the developers can help you here.

Just leave the ttyS0 off.

Ian

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On Sun, Apr 24, 2005 at 08:07:46AM +0200, Christian Wicke wrote:
> I think AGP is still not working perfectly. Other people were having problems
> with it, too. See
> http://lists.xensource.com/archives/html/xen-devel/2005-03/msg00375.html and
> http://lists.xensource.com/archives/html/xen-devel/2005-03/msg00593.html.
>
> I will add this to my howto.

OK thanks. Does this mean I would be better disabling everything to
do with AGP, or should I instead use xen-unstable from source and
not the debian packages?

On Sun, Apr 24, 2005 at 10:10:51AM +0100, Ian Pratt wrote:
> > > so I added a console=ttyS0 on the end of the kernel line from your
> > > howto. Was that wrong?
> > I have no clue. I guess, if the kernel has support for ttyS0
> > it should work.
> > Maybe someone from the developers can help you here.
>
> Just leave the ttyS0 off.

Will I still get kernel output on the serial console then? I need
that (no KVM on the machine).

> OK thanks. Does this mean I would be better disabling everything to
> do with AGP, or should I instead use xen-unstable from source and
> not the debian packages?

If you compile from the -testing release it might Just Work (TM). -testing is
due to be released pretty soon (there's an annoying migration problem still
being tracked down) so it's probably as stable as -stable.

Otherwise, you could just wait and use a VESA X server in the meantime.

Cheers,
Mark

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Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

> > If you compile from the -testing release it might Just Work (TM).
> > -testing is due to be released pretty soon (there's an annoying migration
> > problem still being tracked down) so it's probably as stable as -stable.
>
> Yep, only reason I did it this way was to take advantage of debian
> packages though. (with a custom kernel)

Actually I don't think there were any changes to Xen itself for AGP support.
I'd imagine that compiling the 2.6.11 kernel from -testing should run fine on
the packaged Xen in Debian.

> > Otherwise, you could just wait and use a VESA X server in the meantime.
>
> Well I am not interested in using an X server at all, so I can
> happily disable all AGP things in there as long as my serial console
> will still work.

Linux serial console under Xen shouldn't be any problem - we use it all the
time.

Cheers,
Mark

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On Sun, Apr 24, 2005 at 04:00:00PM +0100, Mark Williamson wrote:
> > OK thanks. Does this mean I would be better disabling everything to
> > do with AGP, or should I instead use xen-unstable from source and
> > not the debian packages?
>
> If you compile from the -testing release it might Just Work (TM). -testing is
> due to be released pretty soon (there's an annoying migration problem still
> being tracked down) so it's probably as stable as -stable.

Yep, only reason I did it this way was to take advantage of debian
packages though. (with a custom kernel)

> Otherwise, you could just wait and use a VESA X server in the meantime.

Well I am not interested in using an X server at all, so I can
happily disable all AGP things in there as long as my serial console
will still work.